Postpone removal of non-bare names in egg fragment to 25.1

The only way for editable VCS URL installs to request an extra is to
place them in the egg fragment. Of course, this is undocumented
and deprecated behaviour, but we should ensure
`pip install -e name[extra] @ VCS_URL` actually works before breaking
our users.

src/pip/_internal/cli/base_command.py

@@ -231,7 +231,7 @@ def _main(self, args: List[str]) -> int:
 
         if options.no_python_version_warning:
             deprecated(
-                reason="--no-python-verison-warning is deprecated.",
+                reason="--no-python-version-warning is deprecated.",
                 replacement="to remove the flag as it's a no-op",
                 gone_in="25.1",
                 issue=13154,

src/pip/_internal/models/link.py

@@ -466,10 +466,10 @@ def _egg_fragment(self) -> Optional[str]:
         project_name = match.group(1)
         if not self._project_name_re.match(project_name):
             deprecated(
-                reason=f"{self} contains an egg fragment with a non-PEP 508 name",
+                reason=f"{self} contains an egg fragment with a non-PEP 508 name.",
                 replacement="to use the req @ url syntax, and remove the egg fragment",
-                gone_in="25.0",
-                issue=11617,
+                gone_in="25.1",
+                issue=13157,
             )
 
         return project_name