Make the v1 mypy plugin work with both v1 and v2 #9540

Job	Run time
lint 3.7	1m 17s
lint 3.8	1m 10s
lint 3.9	1m 26s
lint 3.10	1m 12s
lint 3.11	1m 46s
docs-build	1m 49s
test memray	5m 5s
test ubuntu / 3.7	2m 1s
test ubuntu / 3.8	2m 33s
test ubuntu / 3.9	2m 38s
test ubuntu / 3.10	2m 47s
test ubuntu / 3.11	2m 32s
test macos / 3.7	3m 17s
test macos / 3.8	3m 46s
test macos / 3.9	3m 17s
test macos / 3.10	3m 47s
test macos / 3.11	3m 11s
test windows / 3.7	3m 15s
test windows / 3.8	2m 58s
test windows / 3.9	2m 44s
test windows / 3.10	3m 52s
test windows / 3.11	4m 21s
test ubuntu / pypy3.7	9m 50s
test ubuntu / pypy3.8	8m 18s
test ubuntu / pypy3.9	9m 27s
test fastapi	1m 59s
mypy 1.0.1 / 3.10	4m 32s
mypy lockfile / 3.10	3m 51s
mypy 1.2.0 / 3.10	6m 26s
mypy 1.4.1 / 3.10	3m 50s
mypy lockfile / 3.7	3m 21s
mypy lockfile / 3.8	4m 4s
mypy lockfile / 3.9	3m 47s
mypy lockfile / 3.11	3m 2s
test typing-extensions 4.6.1 on Python 3.8	2m 26s
test typing-extensions 4.6.1 on Python 3.9	2m 19s
test typing-extensions 4.6.1 on Python 3.10	3m 36s
test typing-extensions 4.6.1 on Python 3.11	3m 10s
test typing-extensions main on Python 3.8	3m 3s
test typing-extensions main on Python 3.9	2m 59s
test typing-extensions main on Python 3.10	2m 20s
test typing-extensions main on Python 3.11	3m 50s
test typing-extensions 4.6.1 on Python 3.7	1m 33s
coverage-combine	23s
check	1s
release	0s
Send tweet	0s
	2h 28m 51s

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