Make all errors on an unsupported platform `ConfigurationError`s #4653

Job	Run time
Config export (macos-latest, linked)	2m 13s
Config export (ubuntu-latest, linked)	1m 28s
Config export (ubuntu-latest, nightly-latest)	1m 26s
Config export (macos-latest, nightly-latest)	2m 25s
Config export (windows-latest, linked)	3m 45s
Config export (windows-latest, nightly-latest)	3m 40s
	14m 57s

Provide feedback