Add MPEG2 and MP4 Audio to types allowed in Captive Portal mode

https://bugs.webkit.org/show_bug.cgi?id=241447
<rdar://93934656>

Reviewed by Eric Carlson.

Needed for playing back MP2TS streams and AAC audio.

* Source/WTF/Scripts/Preferences/WebPreferences.yaml:

Canonical link: https://commits.webkit.org/251430@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@295424 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Source/WTF/Scripts/Preferences/WebPreferences.yaml

@@ -1279,7 +1279,7 @@ MediaAudioCodecIDsAllowedInCaptivePortalMode:
   exposed: [ WebKit ]
   defaultValue:
     WebKit:
-      default: '"aac ,zaac,qaac,caac,.mp3"'
+      default: '"aac ,zaac,qaac,caac,.mp3,mp4a"'
 
 MediaCapabilitiesEnabled:
   type: bool
@@ -1313,7 +1313,7 @@ MediaContainerTypesAllowedInCaptivePortalMode:
   exposed: [ WebKit ]
   defaultValue:
     WebKit:
-      default: '"video/mp4,audio/mp4,video/x-m4v,audio/x-m4a,audio/mp3,application/x-mpegURL,application/vnd.apple.mpegURL,video/mp2t,video/iso.segment,audio/aac,audio/mpeg,audio/ac3,audio/eac3"'
+      default: '"video/mp4,audio/mp4,video/x-m4v,audio/x-m4a,audio/mp3,application/x-mpegURL,application/vnd.apple.mpegURL,video/mp2t,video/iso.segment,audio/aac,audio/mpeg,audio/ac3,audio/eac3,video/mpeg2"'
 
 MediaContentTypesRequiringHardwareSupport:
   type: String