Make all errors on an unsupported platform `ConfigurationError`s #4597

Job	Run time
Diagnostic export (ubuntu-latest, nightly-latest)	1m 19s
Diagnostic export (windows-latest, nightly-latest)	3m 7s
Diagnostic export (ubuntu-latest, linked)	1m 24s
Diagnostic export (macos-latest, nightly-latest)	1m 29s
Diagnostic export (windows-latest, linked)	3m 17s
Diagnostic export (macos-latest, linked)	1m 26s
	12m 2s

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