Unable to Remove Provided Callback URL from "Office 365" Custom Connection Setting Section

[NilukaSripalim]

Describe the issue: When attempting to remove a provided callback URL from the "Office 365" custom connection setting section, despite receiving a successful message for the URL removal, the value remains unchanged.

How to reproduce:

1. Create Custom connection and select Office 365 option
2. Navigate to the "Office 365" custom connection setting section.
3. Locate the provided callback URL that needs to be removed.
4. Click on the option to remove or delete the URL.
5. Observe the confirmation message indicating successful update.
6. Check the URL field again to verify if the URL has been removed.

Expected behavior: After confirming the removal of the provided callback URL, the URL should be successfully removed from the custom connection setting section.

Environment information (Please complete the following information; remove any unnecessary fields) :

• Product Version: wso2is-7.0.0-rc4
• OS: Mac
• Database: H2, Postgres
• Userstore: JDBC
• Browser: Chrome, Firefox

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365.webm

[pavinduLakshan]

Even if the callback URL field is removed, the previous value for the callback URL is being sent in the PATCH request.