Make all errors on an unsupported platform `ConfigurationError`s #5268

Job	Run time
Ruby analysis (ubuntu-latest, linked)	1m 5s
Ruby analysis (macos-latest, nightly-latest)	1m 51s
Ruby analysis (ubuntu-latest, nightly-latest)	1m 6s
Ruby analysis (macos-latest, linked)	1m 17s
Ruby analysis (ubuntu-latest, default)	1m 7s
Ruby analysis (macos-latest, default)	1m 38s
	8m 4s

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