Enable MemberImportVisibility check on all targets #210

Job	Run time
Compatibility test	5m 5s
Unit tests / Construct unit test matrix	3s
Example packages / Linux (5.9)	17m 40s
Example packages / Windows (nightly-6.0)	5s
Example packages / Linux (5.10)	15m 59s
Example packages / Windows (6.0)	2s
Example packages / Windows (nightly-main)	2s
Example packages / Linux (6.0)	17m 46s
Example packages / Linux (nightly-6.0)	22m 7s
Integration test / Linux (5.9)	1m 40s
Integration test / Windows (6.0)	2s
Example packages / Linux (nightly-main)	37s
Integration test / Linux (5.10)	1m 41s
Integration test / Linux (6.0)	1m 55s
Integration test / Windows (nightly-6.0)	3s
Integration test / Linux (nightly-6.0)	2m 19s
Soundness / Documentation check	1m 43s
Integration test / Windows (nightly-main)	1s
Integration test / Linux (nightly-main)	35s
Soundness / API breakage check	0s
Soundness / Broken symlinks check	6s
Soundness / Format check	1m 8s
Soundness / Python lint check	8s
Soundness / License headers check	5s
Soundness / Shell check	37s
Soundness / Unacceptable language check	5s
Soundness / YAML lint check	0s
Unit tests / Unit tests / Linux (5.9)	1m 35s
Unit tests / Unit tests / Linux (5.10)	1m 32s
Unit tests / Unit tests / Linux (6.0)	1m 41s
Unit tests / Unit tests / Linux (nightly-6.0)	2m 12s
	1h 38m 34s

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