* Increase the size of the webauthn_credential credential_id field (#18739)
Backport #18739
Unfortunately credentialIDs in u2f are 255 bytes long which with base32 encoding
becomes 408 bytes. The default size of a xorm string field is only a VARCHAR(255)
This problem is not apparent on SQLite because strings get mapped to TEXT there.
Fix#18727
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Ignore the migrate if u2f_registration is not exist (#18760)
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
