Ensure DRAIN_ACTION_FLUSH_AND_UPDATE_DRM_SESSION is always executed

`codecDrainAction` is set to `DRAIN_ACTION_NONE` in 3 places in
`MediaCodecRenderer`:
* The constructor (so there's no prior state to worry about)
* `updateDrmSessionV23()`: Where `mediaCrypto` is reconfigured based
  on `sourceDrmSession` and `codecDrmSession` is also updated to
  `sourceDrmSession`.
* `resetCodecStateForFlush()`: Where (before this change) the action
  is unconditionally set back to `DRAIN_ACTION_NONE` and so any
  required updated implied by
  `DRAIN_ACTION_FLUSH_AND_UPDATE_DRM_SESSION` is not done.

This change ensures that `flushOrReleaseCodec()` handles
`DRAIN_ACTION_FLUSH_AND_UPDATE_DRM_SESSION` before calling .

This probably also resolves Issue: google/ExoPlayer#10274

#minor-release

PiperOrigin-RevId: 454114428
(cherry picked from commit 222faa9)

RELEASENOTES.md

@@ -69,6 +69,10 @@
         for audio passthrough when the format audio channel count is unset,
         which occurs with HLS chunkless preparation
         ([10204](https://github.com/google/ExoPlayer/issues/10204)).
+*   DRM
+    *   Ensure the DRM session is always correctly updated when seeking
+        immediately after a format change
+        ([10274](https://github.com/google/ExoPlayer/issues/10274)).
 *   Ad playback / IMA:
     *   Decrease ad polling rate from every 100ms to every 200ms, to line up
         with Media Rating Council (MRC) recommendations.

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

@@ -856,6 +856,19 @@ protected boolean flushOrReleaseCodec() {
       releaseCodec();
       return true;
     }
+    if (codecDrainAction == DRAIN_ACTION_FLUSH_AND_UPDATE_DRM_SESSION) {
+      checkState(Util.SDK_INT >= 23); // Implied by DRAIN_ACTION_FLUSH_AND_UPDATE_DRM_SESSION
+      // Needed to keep lint happy (it doesn't understand the checkState call alone)
+      if (Util.SDK_INT >= 23) {
+        try {
+          updateDrmSessionV23();
+        } catch (ExoPlaybackException e) {
+          Log.w(TAG, "Failed to update the DRM session, releasing the codec instead.", e);
+          releaseCodec();
+          return true;
+        }
+      }
+    }
     flushCodec();
     return false;
   }