fix: bump open-x4-sdk to clear grayscale state after AA cleanup (#2022)
Pulls in community-sdk PR #9, which clears inGrayscaleMode inside cleanupGrayscaleBuffers() after the restored BW frame is written back into RED RAM. Without this, the next BW page turn would still see the flag set and trigger a redundant grayscaleRevert() refresh, producing visible ghosting on the X4 with text anti-aliasing enabled. Regression introduced by SDK commit 0a8ada2 (factory LUT grayscale support), which removed a redundant inGrayscaleMode guard in grayscaleRevert() and so caused the cleanup to actually run for the first time. Bypassing rules to avoid this going stale and all nightly builds being broken for x4 users
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