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 4949fbe5edc9dbbf1a713b152907cc3a175956d5)

extensions/ima/src/main/java/com/google/android/exoplayer2/ext/ima/ImaServerSideAdInsertionMediaSource.java

@@ -152,7 +152,7 @@ public final class ImaServerSideAdInsertionMediaSource extends CompositeMediaSou
     }
 
     @Override
-    public int[] getSupportedTypes() {
+    public @C.ContentType int[] getSupportedTypes() {
       return contentMediaSourceFactory.getSupportedTypes();
     }
 

library/core/src/main/java/com/google/android/exoplayer2/source/DefaultMediaSourceFactory.java

@@ -395,7 +395,7 @@ public final class DefaultMediaSourceFactory implements MediaSourceFactory {
   }
 
   @Override
-  public int[] getSupportedTypes() {
+  public @C.ContentType int[] getSupportedTypes() {
     return delegateFactoryLoader.getSupportedTypes();
   }
 

library/core/src/main/java/com/google/android/exoplayer2/source/ProgressiveMediaSource.java

@@ -225,7 +225,7 @@ public final class ProgressiveMediaSource extends BaseMediaSource
     }
 
     @Override
-    public int[] getSupportedTypes() {
+    public @C.ContentType int[] getSupportedTypes() {
       return new int[] {C.CONTENT_TYPE_OTHER};
     }
   }

library/dash/src/main/java/com/google/android/exoplayer2/source/dash/DashMediaSource.java

@@ -311,7 +311,7 @@ public final class DashMediaSource extends BaseMediaSource {
     }
 
     @Override
-    public int[] getSupportedTypes() {
+    public @C.ContentType int[] getSupportedTypes() {
       return new int[] {C.CONTENT_TYPE_DASH};
     }
   }

library/hls/src/main/java/com/google/android/exoplayer2/source/hls/HlsMediaSource.java

@@ -359,7 +359,7 @@ public final class HlsMediaSource extends BaseMediaSource
     }
 
     @Override
-    public int[] getSupportedTypes() {
+    public @C.ContentType int[] getSupportedTypes() {
       return new int[] {C.CONTENT_TYPE_HLS};
     }
   }

library/rtsp/src/main/java/com/google/android/exoplayer2/source/rtsp/RtspMediaSource.java

@@ -164,7 +164,7 @@ public final class RtspMediaSource extends BaseMediaSource {
     }
 
     @Override
-    public int[] getSupportedTypes() {
+    public @C.ContentType int[] getSupportedTypes() {
       return new int[] {C.CONTENT_TYPE_RTSP};
     }
 

library/smoothstreaming/src/main/java/com/google/android/exoplayer2/source/smoothstreaming/SsMediaSource.java

@@ -290,7 +290,7 @@ public final class SsMediaSource extends BaseMediaSource
     }
 
     @Override
-    public int[] getSupportedTypes() {
+    public @C.ContentType int[] getSupportedTypes() {
       return new int[] {C.CONTENT_TYPE_SS};
     }
   }

testutils/src/main/java/com/google/android/exoplayer2/testutil/FakeMediaSourceFactory.java

@@ -47,7 +47,7 @@ public final class FakeMediaSourceFactory implements MediaSourceFactory {
   }
 
   @Override
-  public int[] getSupportedTypes() {
+  public @C.ContentType int[] getSupportedTypes() {
     return new int[] {C.CONTENT_TYPE_OTHER};
   }