GeezerVison

# Conflicts:
#	Lib/asyncio/tasks.py
#	Lib/asyncio/timeouts.py
#	Lib/importlib/resources/abc.py
#	Lib/importlib/resources/readers.py
#	Lib/importlib/resources/simple.py
#	Lib/multiprocessing/pool.py
#	Lib/socket.py
#	Lib/zipfile/_path/__init__.py

Concrete OSError subclasses raised in the stdlib often carried no errno at
all, so exc.errno was None and str(exc) lacked the usual "[Errno N]" prefix.
Pass an appropriate errno (and a filename where one is available) everywhere
such an exception is raised.

In C code, PyErr_SetString() with an OSError subclass has the same problem.
Add _PyErr_SetOSErrorWithMessage(), which builds the (errno, msg) pair, and
use it in sys.remote_exec(), _io.TextIOWrapper.read(), _interpchannels and
_Py_RemoteDebug_WriteRemoteMemory().  In _ssl the existing set_timeout_err()
helper covers the remaining sites.

turtle.TurtleScreen.save() now passes the offending path as the filename
argument instead of embedding it in the message, so its errors gain the
"[Errno N] ...: 'path'" form.  test_turtle and the as_completed() timeout
test are updated for the new messages.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>