Clean-up logic for overriding proxy #385

Job	Run time
Quality queries input (ubuntu-latest, nightly-latest)	1m 16s
Quality queries input (macos-latest, nightly-latest)	1m 21s
Quality queries input (ubuntu-latest, linked)	1m 10s
Quality queries input (windows-latest, nightly-latest)	3m 44s
Quality queries input (windows-latest, linked)	2m 47s
Quality queries input (macos-latest, linked)	2m 22s
	12m 40s

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