CMS: Use "EmailAddressAttribute" for server-side email validation over "DataTypeAttribute". #17037
Description
DataTypeAttribute changes the type attribute of the <input> elements rendered by MVC and does nothing more (does not make any server-side validation). On the other hand, the EmailAddressAttribute inherits from the DataType.Email, and therefore both make server-side validation and change the input type to email. Thus, in this PR, i have changed the related place in this perspective.
Resolves #17035
Checklist
- I fully tested it as developer / designer and created unit / integration tests
- I documented it (or no need to document or I will create a separate documentation issue)
- I worked with the design team to get their idea for UI/UX design (or no need to design for this PR)
- I've assigned reviewer, related labels and set a milestone for this PR