Fix tests affected by Robolectric's constructor visibility bug

Previously, Robolectric's instrumentation updated all constructors to be
public. This caused two main types of problems:

1) When non-public constructors were made public and added to the Android API,
Robolectric allowed tests to incorrectly use the constructors on older SDK
levels (where they were non-public). This most commonly occurs for
AccessibiltyEvent and AccessibilityNodeInfo.

2) When reflection was used to instantiate classes that were instrumented by
Robolectric, all constructors were accessible.

Fix issues across Google3 Robolectric tests that were affected by this issue.
A forthcoming change will fix the instrumentation in Robolectric to prevent
this type of issue from occurring.

Tested:
    TAP --sample ran all affected tests and none failed
    http://test/OCL:507861075:BASE:507805409:1675803313108:f2128fa4
PiperOrigin-RevId: 508087822

libraries/exoplayer/src/test/java/androidx/media3/exoplayer/mediacodec/AsynchronousMediaCodecAdapterTest.java

@@ -192,6 +192,7 @@ public class AsynchronousMediaCodecAdapterTest {
     Constructor<MediaCodec.CodecException> constructor =
         MediaCodec.CodecException.class.getDeclaredConstructor(
             Integer.TYPE, Integer.TYPE, String.class);
+    constructor.setAccessible(true);
     return constructor.newInstance(
         /* errorCode= */ 0, /* actionCode= */ 0, /* detailMessage= */ "error from codec");
   }