C++: Add feature flag for TRAP caching. #4198

Job	Run time
Go: Custom queries (ubuntu-latest, stable-20221211)	1m 38s
Go: Custom queries (macos-latest, stable-20221211)	3m 0s
Go: Custom queries (windows-latest, stable-20221211)	5m 56s
Go: Custom queries (ubuntu-latest, stable-20230418)	1m 30s
Go: Custom queries (macos-latest, stable-20230418)	3m 40s
Go: Custom queries (windows-latest, stable-20230418)	6m 17s
Go: Custom queries (ubuntu-latest, stable-v2.13.5)	1m 32s
Go: Custom queries (macos-latest, stable-v2.13.5)	7m 52s
Go: Custom queries (windows-latest, stable-v2.13.5)	3m 23s
Go: Custom queries (ubuntu-latest, stable-v2.14.6)	2m 2s
Go: Custom queries (macos-latest, stable-v2.14.6)	4m 22s
Go: Custom queries (windows-latest, stable-v2.14.6)	5m 57s
Go: Custom queries (ubuntu-latest, default)	2m 37s
Go: Custom queries (macos-latest, default)	5m 39s
Go: Custom queries (windows-latest, default)	5m 0s
Go: Custom queries (ubuntu-latest, latest)	1m 49s
Go: Custom queries (macos-latest, latest)	5m 18s
Go: Custom queries (windows-latest, latest)	6m 23s
Go: Custom queries (ubuntu-latest, nightly-latest)	2m 16s
Go: Custom queries (macos-latest, nightly-latest)	7m 37s
Go: Custom queries (windows-latest, nightly-latest)	4m 4s
	1h 27m 52s

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