WT-15917 Remove the redundant code that do more scrub eviction for disagg

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• Backlog

WT-15807 test_layered39 aborts when closing dhandle as part of verify

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• Closed

WT-15966 Don't garbage collect a prepared update until its durable timestamp or rollback timestamp is behind the prune timestamp

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• Closed

WT-15982 Add checksum to "checkpoint_meta"

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• Closed

WT-15577 Eviction server statistics should track every reason that a page isn't queued for eviction

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• Closed

WT-13815 Fix: Checkpoint doesn't recover the truncated space [test_checkpoint33]

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• Closed

WT-15915 test/format (disagg.mode=leader) verify failure (no deltas) mismatch in number of Page IDs

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• Closed

WT-15999 Add virtual destructor to kv_transaction_snapshot

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• Closed