Do not clear arbitrary errors on import #112660

Currently the import and module code can clear arbitrary errors when format error message for ImportError or AttributeError and override them with ImportError or AttributeError. Usually it is not an issue, because these errors (accessing missed attribute or dict key) should be ignored, but in theory it can be arbitrary error, like KeyboardInterrupt, MemoryError or Recursion error which should not be ignored.

Linked PRs

• gh-112660: Do not clear arbitrary errors on import #112661