Bug 1749046 - Even when the configuration of an encoder wouldn't chan…

…ge because the config is identical, the decoder config must be emitted. r=chunmin

This fixes a test failure in audio encoder WPTs.

Differential Revision: https://phabricator.services.mozilla.com/D199542

UltraBlame original commit: 022e47d17ccaf4408863a4a51aded62a86f1bbf2

dom/media/webcodecs/EncoderTemplate.cpp

@@ -5355,6 +5355,23 @@ to
 do
 return
 now
+but
+per
+spec
+the
+config
+/
+/
+must
+be
+output
+next
+time
+a
+packet
+is
+output
+.
 if
 (
 configDiff
@@ -5365,6 +5382,10 @@ Empty
 )
 )
 {
+mOutputNewDecoderConfig
+=
+true
+;
 LOG
 (
 "