Disable combining runs within a single file #4555

Job	Run time
Config export (windows-latest, nightly-latest)	3m 37s
Config export (macos-latest, nightly-latest)	2m 10s
Config export (macos-latest, linked)	1m 25s
Config export (ubuntu-latest, nightly-latest)	1m 19s
Config export (windows-latest, linked)	1m 53s
Config export (ubuntu-latest, linked)	1m 6s
	11m 30s

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