Description

See the checklist on #16737 . There is separate label area/user-profile, which can be used to search for all issues related to user profile: https://github.com/keycloak/keycloak/issues?q=is%3Aissue+is%3Aopen+label%3Aarea%2Fuser-profile

• Enable user profile by default for realms #25151
• Review and update the test suite to run tests against realms with user profile enabled #25153
• Review documentation to make sure we are covering all aspects of user profile
• Review documentation to cover the main aspects when migrating from legacy to the declarative user profile

### Tasks