[GStreamer] WebCodecs gardening

https://bugs.webkit.org/show_bug.cgi?id=261499

Unreviewed, WebCodecs rebaseline and expectations updates.

* LayoutTests/platform/glib/TestExpectations: reconfiguring-encoder* tests passing after 267865@main
* LayoutTests/platform/glib/imported/w3c/web-platform-tests/webcodecs/video-encoder-config.https.any-expected.txt:
Rebaseline after 267403@main
* LayoutTests/platform/glib/imported/w3c/web-platform-tests/webcodecs/video-encoder-config.https.any.worker-expected.txt: Ditto

Canonical link: https://commits.webkit.org/267939@main

LayoutTests/platform/glib/TestExpectations

@@ -1127,10 +1127,6 @@ webkit.org/b/239750 media/media-source/media-mp4-xhe-aac.html [ Skip ]
 media/media-hevc-video-as-img.html [ ImageOnlyFailure ]
 
 # Temporal scalability support
-imported/w3c/web-platform-tests/webcodecs/reconfiguring-encoder.https.any.html?h264_annexb [ Failure ]
-imported/w3c/web-platform-tests/webcodecs/reconfiguring-encoder.https.any.html?h264_avc [ Failure ]
-imported/w3c/web-platform-tests/webcodecs/reconfiguring-encoder.https.any.worker.html?h264_annexb [ Failure ]
-imported/w3c/web-platform-tests/webcodecs/reconfiguring-encoder.https.any.worker.html?h264_avc [ Failure ]
 imported/w3c/web-platform-tests/webcodecs/temporal-svc-encoding.https.any.html?h264 [ Failure ]
 imported/w3c/web-platform-tests/webcodecs/temporal-svc-encoding.https.any.html?vp8 [ Failure ]
 imported/w3c/web-platform-tests/webcodecs/temporal-svc-encoding.https.any.html?vp9 [ Failure ]

LayoutTests/platform/glib/imported/w3c/web-platform-tests/webcodecs/video-encoder-config.https.any-expected.txt

@@ -19,7 +19,7 @@ PASS Test that VideoEncoder.isConfigSupported() doesn't support config: Height i
 PASS Test that VideoEncoder.isConfigSupported() doesn't support config: Too strenuous accelerated encoding parameters
 PASS Test that VideoEncoder.isConfigSupported() doesn't support config: Odd sized frames for H264
 PASS Test that VideoEncoder.isConfigSupported() doesn't support config: Possible future H264 codec string
-FAIL Test that VideoEncoder.isConfigSupported() doesn't support config: Possible future HEVC codec string assert_false: expected false got true
+PASS Test that VideoEncoder.isConfigSupported() doesn't support config: Possible future HEVC codec string
 PASS Test that VideoEncoder.isConfigSupported() doesn't support config: Possible future VP9 codec string
 PASS Test that VideoEncoder.isConfigSupported() doesn't support config: Possible future AV1 codec string
 FAIL Test that VideoEncoder.configure() doesn't support config: Invalid scalability mode assert_throws_dom: function "() => {

LayoutTests/platform/glib/imported/w3c/web-platform-tests/webcodecs/video-encoder-config.https.any.worker-expected.txt

@@ -19,7 +19,7 @@ PASS Test that VideoEncoder.isConfigSupported() doesn't support config: Height i
 PASS Test that VideoEncoder.isConfigSupported() doesn't support config: Too strenuous accelerated encoding parameters
 PASS Test that VideoEncoder.isConfigSupported() doesn't support config: Odd sized frames for H264
 PASS Test that VideoEncoder.isConfigSupported() doesn't support config: Possible future H264 codec string
-FAIL Test that VideoEncoder.isConfigSupported() doesn't support config: Possible future HEVC codec string assert_false: expected false got true
+PASS Test that VideoEncoder.isConfigSupported() doesn't support config: Possible future HEVC codec string
 PASS Test that VideoEncoder.isConfigSupported() doesn't support config: Possible future VP9 codec string
 PASS Test that VideoEncoder.isConfigSupported() doesn't support config: Possible future AV1 codec string
 FAIL Test that VideoEncoder.configure() doesn't support config: Invalid scalability mode assert_throws_dom: function "() => {