Fix: keep voice playback running when screen locks

[SeniorZhai]

No description provided.

[Copilot]

Pull request overview

This pull request fixes an issue where voice playback would stop when the screen locks or when the app authentication screen appears. The fix ensures audio continues playing in these scenarios.

Changes:

• Updated the audio pause logic in ConversationFragment.onPause() to also check if the app authentication screen is being shown
• Set the appAuthShown flag earlier in the authentication flow (in checkAndShowAppAuth method) to ensure proper state tracking before the authentication activity starts

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
app/src/main/java/one/mixin/android/ui/conversation/ConversationFragment.kt	Modified audio pause condition to check for app authentication screen in addition to screen lock
app/src/main/java/one/mixin/android/MixinApplication.kt	Added appAuthShown = true before showing the authentication activity to ensure the flag is set early

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[Copilot]

The comment refers to "app lock overlay" but AppAuthActivity is a separate activity, not an overlay. Consider updating the comment to say "app lock screen" or "app authentication" for accuracy.

Suggested change

	// don't stop audio player if triggered by screen off or app lock overlay
	// don't stop audio player if triggered by screen off or app lock screen