Bug 1626555 - Add `dom/media/{test,tests,wave}` to the list of non-unified-build-compatible directories. r=sg

Depends on D95038

Differential Revision: https://phabricator.services.mozilla.com/D95039

build/non-unified-compat

@@ -59,5 +59,8 @@ dom/media/mp4/
 dom/media/ogg/
 dom/media/platforms/
 dom/media/systemservices/
+dom/media/test/
+dom/media/tests/
+dom/media/wave/
 dom/quota/
 dom/simpledb/