Add an option to automatically verify SSH keys from LDAP (#35927)

This pull request adds an option to automatically verify SSH keys from
LDAP authentication sources.

This allows a correct authentication and verification workflow for
LDAP-enabled organizations; under normal circumstances SSH keys in LDAP
are not managed by users manually.

services/asymkey/ssh_key_test.go

@@ -66,7 +66,7 @@ ssh-dss AAAAB3NzaC1kc3MAAACBAOChCC7lf6Uo9n7BmZ6M8St19PZf4Tn59NriyboW2x/DZuYAz3ib
 
 	for i, kase := range testCases {
 		s.ID = int64(i) + 20
-		asymkey_model.AddPublicKeysBySource(t.Context(), user, s, []string{kase.keyString})
+		asymkey_model.AddPublicKeysBySource(t.Context(), user, s, []string{kase.keyString}, false)
 		keys, err := db.Find[asymkey_model.PublicKey](t.Context(), asymkey_model.FindPublicKeyOptions{
 			OwnerID:       user.ID,
 			LoginSourceID: s.ID,