Clean up `resolve_supported_languages_using_cli` FF #6099

Job	Run time
Ruby analysis (macos-latest, default)	1m 32s
Ruby analysis (ubuntu-latest, default)	48s
Ruby analysis (macos-latest, linked)	1m 13s
Ruby analysis (ubuntu-latest, nightly-latest)	54s
Ruby analysis (macos-latest, nightly-latest)	1m 19s
Ruby analysis (ubuntu-latest, linked)	49s
	6m 35s

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