Overlay: additional feature flags #4461

Job	Run time
Diagnostic export (ubuntu-latest, linked)	57s
Diagnostic export (macos-latest, linked)	1m 41s
Diagnostic export (windows-latest, linked)	1m 57s
Diagnostic export (ubuntu-latest, nightly-latest)	1m 21s
Diagnostic export (macos-latest, nightly-latest)	2m 2s
Diagnostic export (windows-latest, nightly-latest)	3m 20s
	11m 18s

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