Add missing IntDef on MediaSource.Factory.getSupportedTypes overrides

Without this the annotation isn't shown in javadoc (same in Dackka)

No annotation:
https://exoplayer.dev/doc/reference/com/google/android/exoplayer2/source/DefaultMediaSourceFactory.html#getSupportedTypes()

Annotation present:
https://exoplayer.dev/doc/reference/com/google/android/exoplayer2/source/MediaSource.Factory.html#getSupportedTypes()

#minor-release

PiperOrigin-RevId: 487498450
(cherry picked from commit 4f04a284ed)

libraries/exoplayer/src/main/java/androidx/media3/exoplayer/source/DefaultMediaSourceFactory.java

@@ -412,7 +412,7 @@ public final class DefaultMediaSourceFactory implements MediaSourceFactory {
 
   @UnstableApi
   @Override
-  public int[] getSupportedTypes() {
+  public @C.ContentType int[] getSupportedTypes() {
     return delegateFactoryLoader.getSupportedTypes();
   }
 

libraries/exoplayer/src/main/java/androidx/media3/exoplayer/source/ProgressiveMediaSource.java

@@ -227,7 +227,7 @@ public final class ProgressiveMediaSource extends BaseMediaSource
     }
 
     @Override
-    public int[] getSupportedTypes() {
+    public @C.ContentType int[] getSupportedTypes() {
       return new int[] {C.CONTENT_TYPE_OTHER};
     }
   }

libraries/exoplayer_dash/src/main/java/androidx/media3/exoplayer/dash/DashMediaSource.java

@@ -313,7 +313,7 @@ public final class DashMediaSource extends BaseMediaSource {
     }
 
     @Override
-    public int[] getSupportedTypes() {
+    public @C.ContentType int[] getSupportedTypes() {
       return new int[] {C.CONTENT_TYPE_DASH};
     }
   }

libraries/exoplayer_hls/src/main/java/androidx/media3/exoplayer/hls/HlsMediaSource.java

@@ -361,7 +361,7 @@ public final class HlsMediaSource extends BaseMediaSource
     }
 
     @Override
-    public int[] getSupportedTypes() {
+    public @C.ContentType int[] getSupportedTypes() {
       return new int[] {C.CONTENT_TYPE_HLS};
     }
   }

libraries/exoplayer_ima/src/main/java/androidx/media3/exoplayer/ima/ImaServerSideAdInsertionMediaSource.java

@@ -154,7 +154,7 @@ public final class ImaServerSideAdInsertionMediaSource extends CompositeMediaSou
     }
 
     @Override
-    public int[] getSupportedTypes() {
+    public @C.ContentType int[] getSupportedTypes() {
       return contentMediaSourceFactory.getSupportedTypes();
     }
 

libraries/exoplayer_rtsp/src/main/java/androidx/media3/exoplayer/rtsp/RtspMediaSource.java

@@ -166,7 +166,7 @@ public final class RtspMediaSource extends BaseMediaSource {
     }
 
     @Override
-    public int[] getSupportedTypes() {
+    public @C.ContentType int[] getSupportedTypes() {
       return new int[] {C.CONTENT_TYPE_RTSP};
     }
 

libraries/exoplayer_smoothstreaming/src/main/java/androidx/media3/exoplayer/smoothstreaming/SsMediaSource.java

@@ -292,7 +292,7 @@ public final class SsMediaSource extends BaseMediaSource
     }
 
     @Override
-    public int[] getSupportedTypes() {
+    public @C.ContentType int[] getSupportedTypes() {
       return new int[] {C.CONTENT_TYPE_SS};
     }
   }

libraries/test_utils/src/main/java/androidx/media3/test/utils/FakeMediaSourceFactory.java

@@ -49,7 +49,7 @@ public final class FakeMediaSourceFactory implements MediaSourceFactory {
   }
 
   @Override
-  public int[] getSupportedTypes() {
+  public @C.ContentType int[] getSupportedTypes() {
     return new int[] {C.CONTENT_TYPE_OTHER};
   }