Use a stack for the types namespace #11560

Job	Run time
docs-build	1m 31s
lint 3.8	1m 18s
lint 3.9	2m 53s
test memray	4m 4s
lint 3.10	1m 7s
lint 3.11	1m 2s
lint 3.12	1m 0s
test ubuntu / 3.8	2m 15s
test fastapi	1m 39s
test ubuntu / 3.9	2m 10s
test ubuntu / 3.10	2m 36s
test pydantic plugin	1m 55s
test ubuntu / 3.11	2m 7s
mypy 1.0.1 / 3.10	4m 19s
test ubuntu / 3.12	2m 22s
mypy lockfile / 3.10	3m 30s
test macos / 3.8	4m 50s
test typing-extensions 4.6.1 on Python 3.8	2m 56s
mypy 1.2.0 / 3.10	4m 10s
test macos / 3.9	3m 45s
test typing-extensions 4.6.1 on Python 3.9	2m 45s
mypy 1.4.1 / 3.10	2m 54s
test macos / 3.10	3m 6s
test typing-extensions 4.6.1 on Python 3.10	2m 48s
mypy 1.5.1 / 3.10	2m 58s
test macos / 3.11	3m 23s
test typing-extensions 4.6.1 on Python 3.11	2m 32s
mypy lockfile / 3.8	3m 14s
test macos / 3.12	3m 36s
test typing-extensions 4.6.1 on Python 3.12	2m 30s
test windows / 3.8	2m 35s
test typing-extensions main on Python 3.8	2m 57s
mypy lockfile / 3.9	3m 16s
test windows / 3.9	2m 41s
test typing-extensions main on Python 3.9	2m 52s
mypy lockfile / 3.11	3m 25s
test typing-extensions main on Python 3.10	2m 45s
test windows / 3.10	2m 57s
mypy 1.5.1 / 3.12	2m 37s
test typing-extensions main on Python 3.11	2m 37s
test windows / 3.11	2m 35s
test typing-extensions main on Python 3.12	2m 30s
test windows / 3.12	2m 49s
test ubuntu / pypy3.8	6m 46s
test ubuntu / pypy3.9	7m 3s
test ubuntu / pypy3.10	6m 56s
coverage-combine	30s
check	4s
release	0s
Send tweet	0s
	2h 19m 10s

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