Add additional EmailChangedEvent and PhoneNumberChangedEvent

[eskour]

Add EmailChangedEvent and PhoneNumberChangedEvent. Useful for creating additional RiskEvents.

[cleftheris]

Are we sure this is not half baked? For every new event we need to ensure that it fires correctly when the actual thing happens. For instance: do we know if the event for email change fires when the user does this from the minimal api, via the Identity UI on the Profile page etc.

The only way to test this is to create a test

[eskour]

The tests have been improved.

After further researching, we have the following observations:

• Both EmailChangedEvent and PhoneNumberChangedEvent are triggered when using both MyAccount Controller and Minimal API endpoints
• Updating profile through Manage / Profile page triggers EmailChangedEvent, but not PhoneNumberChangedEvent
• Managing users through UserController and corresponding Minimal API endpoint does not trigger the aforementioned events at all.