Fix type-errors post-merge

Author: Avasam

setuptools/__init__.py

@@ -186,7 +186,7 @@ def _ensure_stringlike(self, option, what, default=None):
             )
         return val
 
-    def ensure_string_list(self, option: str):  # type: ignore[override] # Fixed in typeshed for mypy 1.12
+    def ensure_string_list(self, option: str):
         r"""Ensure that 'option' is a list of strings.  If 'option' is
         currently a string, we split it either on /,\s*/ or /\s+/, so
         "foo bar baz", "foo,bar,baz", and "foo,   bar baz" all become

setuptools/dist.py

@@ -33,6 +33,7 @@
     command as _,  # noqa: F401 # imported for side-effects
 )
 from ._importlib import metadata
+from ._reqs import _StrOrIter
 from .config import pyprojecttoml, setupcfg
 from .discovery import ConfigDiscovery
 from .monkey import get_unpatched