…line (GH-104650)Backport ofGH-104579

* main: (30 commits)pythongh-103987: fix several crashes in mmap module (python#103990)  docs: fix wrong indentation causing rendering error in dis page (python#104661)pythongh-94906: Support multiple steps in math.nextafter (python#103881)pythongh-104472: Skip `test_subprocess.ProcessTestCase.test_empty_env` if ASAN is enabled (python#104667)pythongh-103839: Allow building Tkinter against Tcl 8.7 without external libtommath (pythonGH-103842)pythongh-85984: New additions and improvements to the tty library. (python#101832)pythongh-104659: Consolidate python examples in enum documentation (python#104665)pythongh-92248: Deprecate `type`, `choices`, `metavar` parameters of `argparse.BooleanOptionalAction` (python#103678)pythongh-104645: fix error handling in marshal tests (python#104646)pythongh-104600: Make type.__type_params__ writable (python#104634)pythongh-104602: Add additional test for listcomp with lambda (python#104639)pythongh-104640: Disallow walrus in comprehension within type scopes (python#104641)pythongh-103921: Rename "type" header in argparse docs (python#104654)  Improve readability of `typing._ProtocolMeta.__instancecheck__` (python#104649)pythongh-96522: Fix deadlock in pty.spawn (python#96639)pythonGH-102818: Do not call `PyTraceBack_Here` in sys.settrace trampoline.  (pythonGH-104579)pythonGH-103545: Add macOS specific constants for ``os.setpriority`` to ``os`` (python#104606)pythongh-104623: Update macOS installer to SQLite 3.42.0 (pythonGH-104624)pythongh-104619: never leak comprehension locals to outer locals() (python#104637)pythongh-104602: ensure all cellvars are known up front (python#104603)  ...