Unable to prevent update behaviour while validating input fields ui5

[Amit_Joshi1]

this is edit xml fragment 

```

<core:FragmentDefinition

    xmlns="sap.m"

    xmlns:core="sap.ui.core">

    <Dialog id="editDialog" title="Edit Vendor" afterClose=".onDialogClose">

        <VBox>

            <Label text="Full Name" />

            <Input id="inputVendorName" value="{vendorListModel>/vendors/0/fullName}" change=".onFullNameChange" />

            <Label text="Email" />

            <Input id="inputVendorEmail" value="{vendorListModel>/vendors/0/email}" change=".onEmailChange" />

            <Label text="Phone Number" />

            <Input id="inputPhoneNumber" value="{vendorListModel>/vendors/0/phoneNumber}" change=".onPhoneChange" />

            <Label text="Date of Birth" />

            <DatePicker id="inputVendorDob" value="{vendorListModel>/vendors/0/dob}" change=".onDobChange" />

        </VBox>

        <beginButton>

            <Button text="Save" press=".onSavePress" />

        </beginButton>

        <endButton>

            <Button text="Cancel" press=".onCancelPress" />

        </endButton>

    </Dialog>

</core:FragmentDefinition>

```

 I have a controller where I am trying to update values after clicking the edit button. The validation is working and showing an error, but when I provide incorrect input, it still gets updated in the UI after clicking the save button. For example, if I have the email "temp@gmail.com" and I click on edit, then enter "temp" only, it shows a validation error as expected. However, if I click the save button, it updates the UI table with the incorrect value. I want to prevent that from happening.

here is my controller looks,

```

// Triggered when edit button is pressed

     onEditPress: function (oEvent) {

        const oView = this.getView();

        const oContext = oEvent.getSource().getBindingContext("vendorListModel");

        if (!this._oEditDialog) {

            Fragment.load({

                name: "vendornamespace.productionplanning.view.EditVendorDialog",

                controller: this

            }).then((oDialog) => {

                this._oEditDialog = oDialog;

                oView.addDependent(this._oEditDialog);

                this._bindDialog(oContext);

                this._oEditDialog.open();

            });

        } else {

            this._bindDialog(oContext);

            this._oEditDialog.open();

        }

    },

    _bindDialog: function (oContext) {

        this._oEditDialog.bindElement({

            path: oContext.getPath(),

            model: "vendorListModel"

        });

    },

    _validateInputs: function () {

        const oDialog = this._oEditDialog;

        const aContent = oDialog.getContent()[0].getItems();

        const oFullNameInput = aContent[1];

        const oEmailInput = aContent[3];

        const oPhoneInput = aContent[5];

        const oDobInput = aContent[7];

        let bValidationError = false;

        // Validate Full Name

        if (!oFullNameInput.getValue()) {

            oFullNameInput.setValueState("Error");

            MessageToast.show("Full name is required.");

            bValidationError = true;

        } else {

            oFullNameInput.setValueState("None");

        }

        // Validate Email

        const sEmail = oEmailInput.getValue();

        const oEmailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;

        console.log("Email being validated: ", sEmail); // Log email validation attempt

        if (!sEmail) {

            oEmailInput.setValueState("Error");

            MessageToast.show("Email is required.");

            bValidationError = true;

        } else if (!oEmailRegex.test(sEmail)) {

            oEmailInput.setValueState("Error");

            MessageToast.show("Invalid email format.");

            bValidationError = true;

        } else {

            oEmailInput.setValueState("None");

        }

        // Validate Phone Number

        const sPhoneNumber = oPhoneInput.getValue();

        const oPhoneRegex = /^[0-9]+$/;

        if (!sPhoneNumber) {

            oPhoneInput.setValueState("Error");

            MessageToast.show("Phone number is required.");

            bValidationError = true;

        } else if (!oPhoneRegex.test(sPhoneNumber)) {

            oPhoneInput.setValueState("Error");

            MessageToast.show("Phone number must contain only digits.");

            bValidationError = true;

        } else {

            oPhoneInput.setValueState("None");

        }

        console.log("Validation Result: ", !bValidationError); // Log validation result

        return !bValidationError; // Returns true if no validation errors

    },

    onSavePress: function () {

        console.log("Start onSavePress");

        // Validate inputs

        const isValid = this._validateInputs();

        console.log("Is Valid Before Update: ", isValid);

        // Check validation status and exit if not valid

        if (!isValid) {

            console.log("Validation failed. No updates will occur.");

            MessageToast.show("Please correct the errors before saving.");

            return; // Make sure to exit early

        }

        // Proceed with updates since validation has passed

        console.log("Validation passed. Proceeding with update...");

        // Access vendor data and proceed to update

        const oVendorData = this._oEditDialog.getBindingContext("vendorListModel").getObject();

        const oModel = this.getView().getModel("vendorListModel");

        // Accessing dialog content items

        const aContent = this._oEditDialog.getContent()[0].getItems();

        console.log("Updating vendor data with:", {

            fullName: aContent[1].getValue(),

            email: aContent[3].getValue(),

            phoneNumber: aContent[5].getValue(),

            dob: aContent[7].getDateValue()

        });

        // Update properties in the model

        const vendorPath = this._oEditDialog.getBindingContext("vendorListModel").getPath();

        oModel.setProperty(`${vendorPath}/fullName`, aContent[1].getValue());

        oModel.setProperty(`${vendorPath}/email`, aContent[3].getValue());

        oModel.setProperty(`${vendorPath}/phoneNumber`, aContent[5].getValue());

        oModel.setProperty(`${vendorPath}/dob`, aContent[7].getDateValue());

        // Close the dialog and show success message

        this._oEditDialog.close();

        MessageToast.show("Vendor details updated successfully.");

    },

    onCancelPress: function () {

        this._oEditDialog.close();

    },

    onDialogClose: function () {

        if (this._oEditDialog) {

            this._oEditDialog.destroy(); // Optional cleanup

            this._oEditDialog = undefined; // Reset the dialog reference

        }

    },

```

@gregorw sir please help me to resolve the bug.

SAP Fiori #