Add 7 new e2e tests verifying profile form validation in both manage
and admin UIs: invalid phone number, phone normalization, E.164 hint
attributes, and admin-side email/phone/picture URL validation errors.
Fix 3 pre-existing test failures:
- Replace invalid seeded phone number (+1234567890) with valid E.164
(+12025551234) that was causing profile update tests to fail
- Update email validation error assertion to match actual pydantic
message (value_error type uses raw message, not label-prefixed)
