Use different package names in DiagnosticInfo for media3 and exoplayer

Issue: #476

#minor-release

PiperOrigin-RevId: 543460075
(cherry picked from commit 140c83c)

libraries/exoplayer/src/main/java/androidx/media3/exoplayer/mediacodec/MediaCodecRenderer.java

@@ -187,9 +187,8 @@ private static String getDiagnosticInfoV21(@Nullable Throwable cause) {
 
     private static String buildCustomDiagnosticInfo(int errorCode) {
       String sign = errorCode < 0 ? "neg_" : "";
-      return "com.google.android.exoplayer2.mediacodec.MediaCodecRenderer_"
-          + sign
-          + Math.abs(errorCode);
+      String packageName = "androidx.media3.exoplayer.mediacodec";
+      return packageName + ".MediaCodecRenderer_" + sign + Math.abs(errorCode);
     }
   }