Disable combining runs within a single file #4080

Job	Run time
Resolve environment (windows-latest, linked)	1m 7s
Resolve environment (ubuntu-latest, default)	41s
Resolve environment (ubuntu-latest, linked)	35s
Resolve environment (windows-latest, default)	1m 1s
Resolve environment (ubuntu-latest, nightly-latest)	51s
Resolve environment (macos-latest, linked)	2m 40s
Resolve environment (macos-latest, nightly-latest)	2m 11s
Resolve environment (macos-latest, default)	3m 10s
Resolve environment (windows-latest, nightly-latest)	2m 44s
	15m 0s

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