fix: fullscreen button did nothing in portrait on large screens

[4in4in]

Summary

On large screens (unfolded foldables, tablets) the player's fullscreen button did nothing in portrait orientation — it only started working after physically rotating the device to landscape. Reproduced on a Galaxy Fold 6 (inner screen), both with tablet mode enabled and disabled.

Problem

The fullscreen button handler (VideoDetailFragment.onScreenRotationButtonClicked()) only toggles fullscreen directly on tablets when auto-rotate is enabled or the device is already in landscape. In every other case it calls activity.setRequestedOrientation(SENSOR_LANDSCAPE) and relies on the resulting rotation to enter fullscreen.

Since Android 12L, device manufacturers can configure devices to ignore setRequestedOrientation() on large screens (see Device compatibility mode); Samsung enables this on the Fold's inner display. And since Android 16, for apps targeting SDK 36 this is guaranteed platform behavior on displays with smallest width >= 600dp: orientation restrictions, including setRequestedOrientation(), are ignored (also announced in the Android Developers blog). PipePipe targets SDK 36, so on the unfolded Fold the call is silently ignored, without any error, and the button appears dead:

• tablet mode, portrait, system auto-rotate off → rotation request ignored → nothing happens;
• tablet mode off, portrait → same phone code path → same result;
• landscape works, because there the tablet branch toggles fullscreen directly.

Changes

• Add DeviceUtils.isOrientationRequestIgnored(): Android 12L+ and current display at least sw600dp — the same threshold the system uses when ignoring orientation requests.
• onScreenRotationButtonClicked(): on such screens toggle fullscreen directly instead of trying to rotate (portrait fullscreen is already supported — vertical videos use it).
• Skip two auto-exit-fullscreen paths that rely on forced rotation and would otherwise kick these devices out of portrait fullscreen: VideoDetailFragment.onServiceConnected() and Player.onVideoSizeChanged().
• Translate the Chinese comments in the touched handler to English.

Phones and pre-12L tablets keep the existing behavior (the new check returns false there); the folded cover screen (below sw600dp) also behaves as before.

Validation

• ./gradlew assembleDebug in PipePipeClient.
• Tested on a real Galaxy Fold 6:
  • unfolded, portrait, system auto-rotate off, tablet mode auto and off → the button now enters/exits fullscreen;
  • unfolded, landscape → unchanged;
  • cover screen (phone layout) → unchanged, the button still rotates to landscape.