Make IR the default evaluator (#13718) #531

Job	Run time
plugins (windows-latest)	4m 55s
std-lib-and-python-virtualenv (ubuntu-20.04, py)	3m 56s
plugins (macos-13)	4m 42s
tests (windows-latest)	12m 47s
std-lib-and-python-virtualenv (macos-latest, py)	4m 12s
fmt-clippy (windows-latest)	8m 29s
plugins (ubuntu-20.04)	5m 18s
tests (macos-latest)	5m 13s
std-lib-and-python-virtualenv (windows-latest, py)	8m 50s
fmt-clippy (macos-13)	3m 28s
tests (ubuntu-20.04)	6m 44s
fmt-clippy (ubuntu-20.04)	2m 49s
	1h 11m 23s

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