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## Problem part of https://github.com/neondatabase/neon/issues/11318 ; it is not entirely safe to run gc-compaction over the metadata key range due to tombstones and implications of image layers (missing key in image layer == key not exist). The auto gc-compaction trigger already skips metadata key ranges (see `schedule_auto_compaction` call in `trigger_auto_compaction`). In this patch we enforce it directly in gc_compact_inner so that compactions triggered via HTTP API will also be subject to this restriction. ## Summary of changes Ensure gc-compaction only runs on rel key ranges. Signed-off-by: Alex Chi Z <chi@neon.tech>