Make all errors on an unsupported platform `ConfigurationError`s #4609

Job	Run time
Diagnostic export (ubuntu-latest, nightly-latest)	1m 25s
Diagnostic export (windows-latest, linked)	3m 2s
Diagnostic export (macos-latest, linked)	1m 28s
Diagnostic export (windows-latest, nightly-latest)	3m 34s
Diagnostic export (ubuntu-latest, linked)	1m 23s
Diagnostic export (macos-latest, nightly-latest)	1m 57s
	12m 49s

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