REGRESSION (iOS 17.4 Beta): No incoming video in Teams VA

rdar://122859173
https://bugs.webkit.org/show_bug.cgi?id=269281

Reviewed by Brent Fulgham.

WebRTC applicartions typically do not care about reordering since it hits the latency.
We are thus setting the window size to 0 when AVC is false, which is the case for libwebrtc decoders.
WebCodecs websites that had issues with reordering are using AVC, so should not be broken by this change.

* Source/ThirdParty/libwebrtc/Source/webrtc/sdk/objc/components/video_codec/RTCVideoDecoderH264.mm:
(-[RTCVideoDecoderH264 decodeData:size:timeStamp:]):

Canonical link: https://commits.webkit.org/274581@main

Source/ThirdParty/libwebrtc/Source/webrtc/sdk/objc/components/video_codec/RTCVideoDecoderH264.mm

@@ -161,7 +161,8 @@ - (NSInteger)decodeData:(const uint8_t *)data
   rtc::ScopedCFTypeRef<CMVideoFormatDescriptionRef> inputFormat =
       rtc::ScopedCF(webrtc::CreateVideoFormatDescription(data, size));
   if (inputFormat) {
-    _reorderQueue.setReorderSize(webrtc::ComputeH264ReorderSizeFromAnnexB(data, size));
+    // FIXME: Reenable reorder size computation for AnnexB decoders, once feasible (rdar://122902399).
+    _reorderQueue.setReorderSize(_useAVC ? webrtc::ComputeH264ReorderSizeFromAnnexB(data, size) : 0);
     // Check if the video format has changed, and reinitialize decoder if
      // needed.
     if (!CMFormatDescriptionEqual(inputFormat.get(), _videoFormat)) {