Disable combining runs within a single file #4557

Job	Run time
Config export (ubuntu-latest, linked)	1m 8s
Config export (macos-latest, linked)	1m 30s
Config export (ubuntu-latest, nightly-latest)	1m 20s
Config export (windows-latest, nightly-latest)	3m 41s
Config export (windows-latest, linked)	1m 52s
Config export (macos-latest, nightly-latest)	2m 6s
	11m 37s

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