Ensure uniqueness of overlay-base database cache keys #6123

Job	Run time
Ruby analysis (ubuntu-latest, linked)	52s
Ruby analysis (macos-latest, default)	1m 13s
Ruby analysis (ubuntu-latest, default)	52s
Ruby analysis (macos-latest, nightly-latest)	57s
Ruby analysis (ubuntu-latest, nightly-latest)	49s
Ruby analysis (macos-latest, linked)	1m 5s
	5m 48s

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