- Add email normalization to TeamInvitation model using setEmailAttribute()
- Add HasFactory trait to Team model for testing support
- Create TeamFactory for testing
- Add tests to verify email normalization works correctly
- Fixes issue where mixed case emails in invitations would cause lookup failures
- Resolves#6291
The bug occurred because:
1. User model normalizes emails to lowercase
2. TeamInvitation model did not normalize emails
3. When invitation was created with mixed case, it was stored as-is
4. User lookup failed due to case mismatch during invitation acceptance
5. This caused users to not be able to see teams they were invited to
This fix ensures both models normalize emails consistently.
