FindPython: Enable C language in tests that find the Development component

Marc Chevrierrequested to merge
marc.chevrier/cmake:FindPython into master

Since !5307 (merged) some FindPython tests fail because the Development component cannot be found without knowing CMAKE_LIBRARY_ARCHITECTURE. Enable at least one language in each of these test cases to get that value. This is consistent with use in practice because the Development component does not make much sense without a language to compile sources anyway.

Fixes: #21277 (closed)
Topic-rename: FindPython-fix-tests-failures

Edited by Brad King

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