♻️ refactor(test): remove unused type: ignore comment

Signed-off-by: Bernát Gábor <bgabor8@bloomberg.net>

Author: gaborbernat

src/tox/config/loader/toml/_product.py

@@ -51,7 +51,7 @@ def expand_factor_group(group: Any) -> list[str]:
 
 def extract_label(group: Any) -> str | None:
     if isinstance(group, dict) and "prefix" not in group and len(group) == 1:
-        return next(iter(group))
+        return str(next(iter(group)))
     return None
 
 

src/tox/tox_env/python/dependency_groups.py

@@ -149,7 +149,7 @@ def _resolve_dependency_group(
                 msg = f"{item!r} is not valid requirement due to {exc}"
                 raise Fail(msg) from exc
         elif isinstance(item, dict) and tuple(item.keys()) == ("include-group",):
-            include_group = canonicalize_name(next(iter(item.values())))
+            include_group = canonicalize_name(str(next(iter(item.values()))))
             result = result.union(
                 _resolve_dependency_group(
                     dependency_groups, include_group, original_names_lookup, (*past_groups, group)

src/tox/tox_env/python/virtual_env/package/util.py

@@ -44,7 +44,7 @@ def dependencies_with_extras_from_markers(
             raise Fail(msg)
     result: list[Requirement] = []
     found: set[str] = set()
-    todo: set[str | None] = normalized_extras | {None}  # ty: ignore[invalid-assignment]
+    todo: set[str | None] = normalized_extras | {None}
     visited: set[str | None] = set()
     while todo:
         new_extras: set[str | None] = set()
@@ -95,7 +95,7 @@ def _extract_extra_markers(req: Requirement) -> tuple[Requirement, set[str | Non
         cast("Marker", req.marker)._markers = new_markers  # noqa: SLF001
     else:
         req.marker = None
-    return req, cast("set[str | None]", extra_markers) or {None}  # ty: ignore[invalid-return-type]
+    return req, cast("set[str | None]", extra_markers) or {None}
 
 
 def _get_extra(