Use different package names in DiagnosticInfo for media3 and exoplayer

Issue: androidx/media#476

#minor-release

PiperOrigin-RevId: 543460075
(cherry picked from commit 5584007400be55a22a95825f00b0fbb607e121c1)

library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecRenderer.java

@@ -193,9 +193,8 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
 
 
     private static String buildCustomDiagnosticInfo(int errorCode) {
     private static String buildCustomDiagnosticInfo(int errorCode) {
       String sign = errorCode < 0 ? "neg_" : "";
       String sign = errorCode < 0 ? "neg_" : "";
-      return "com.google.android.exoplayer2.mediacodec.MediaCodecRenderer_"
-          + sign
-          + Math.abs(errorCode);
+      String packageName = "com.google.android.exoplayer2.mediacodec";
+      return packageName + ".MediaCodecRenderer_" + sign + Math.abs(errorCode);
     }
     }
   }
   }