android: Limit ignored callbacks during flush

[jasonzhangxx]

Update MediaCodecBridge to only ignore output buffer callbacks while
the codec is flushing.

Bug: 497004556

[github-actions]

🤖 Gemini Suggested Commit Message

---

android: Limit ignored callbacks during flush

Update MediaCodecBridge to only ignore output buffer callbacks while
the codec is flushing. Previously, several callback types including
input buffers and format changes were dropped during this state. This
ensures that the native bridge continues to receive relevant events
that are not strictly related to output data buffers during a flush.

Bug: 497004556

---

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[gemini-code-assist]

Code Review

This pull request removes the mIsFlushing check from several callback methods (onInputBufferAvailable, onOutputFormatChanged, onFrameRendered, and onFirstTunnelFrameReady) in MediaCodecBridge.java, meaning these callbacks will no longer return early when the bridge is flushing. There are no review comments, so I have no feedback to provide.

[zhongqiliang]

LGTM For ATV