Merge pull request #1265 from firebase/mc/12 Update FirebaseUI to be compatible with Firebase 12

Merge pull request #1262 from firebase/further-ui-tweaks 

Merge pull request #1222 from firebase/mc/fb-dep update package.swift

Prep to publish 14.2.6 with fix for #1207 (#1213) 

Fix Xcode 16 build error (#1211) 

Make sure FUIAuthDelegate methods get called for Firebase 11 (#1203) 

Fix Swift sample build (#1202) 

Update config for GSI v7 (#1200) 

Fix build regression (#1197) * Fix build regression * phoneauthui spm build issues * test build fix

Various release updates (#1194)