Avoid unsupported mock operation

Calling a real method on an interface is not supported by
the Mockito version run by Gradle.

#cherrypick

PiperOrigin-RevId: 738358342
(cherry picked from commit d6b9988)

Author: tonihei

libraries/exoplayer_hls/src/test/java/androidx/media3/exoplayer/hls/HlsMediaPeriodTest.java

@@ -75,7 +75,8 @@ public void getSteamKeys_isCompatibleWithHlsMultivariantPlaylistFilter() {
     FilterableManifestMediaPeriodFactory<HlsPlaylist> mediaPeriodFactory =
         (playlist, periodIndex) -> {
           HlsExtractorFactory mockHlsExtractorFactory = mock(HlsExtractorFactory.class);
-          when(mockHlsExtractorFactory.getOutputTextFormat(any())).thenCallRealMethod();
+          when(mockHlsExtractorFactory.getOutputTextFormat(any()))
+              .then(invocation -> invocation.getArguments()[0]);
           HlsDataSourceFactory mockDataSourceFactory = mock(HlsDataSourceFactory.class);
           when(mockDataSourceFactory.createDataSource(anyInt())).thenReturn(mock(DataSource.class));
           HlsPlaylistTracker mockPlaylistTracker = mock(HlsPlaylistTracker.class);

libraries/exoplayer_smoothstreaming/src/test/java/androidx/media3/exoplayer/smoothstreaming/SsMediaPeriodTest.java

@@ -66,7 +66,8 @@ public void getSteamKeys_isCompatibleWithSsManifestFilter() {
             createStreamElement(
                 /* name= */ "text", C.TRACK_TYPE_TEXT, createTextFormat(/* language= */ "eng")));
     SsChunkSource.Factory chunkSourceFactory = mock(SsChunkSource.Factory.class);
-    when(chunkSourceFactory.getOutputTextFormat(any())).thenCallRealMethod();
+    when(chunkSourceFactory.getOutputTextFormat(any()))
+        .then(invocation -> invocation.getArguments()[0]);
 
     FilterableManifestMediaPeriodFactory<SsManifest> mediaPeriodFactory =
         (manifest, periodIndex) -> {