fix typing

Author: MarcoGorelli

pandas-stubs/core/indexes/multi.pyi

@@ -109,7 +109,7 @@ class MultiIndex(Index):
     def dropna(self, how: AnyAll = "any") -> Self: ...
     def get_level_values(self, level: str | int) -> Index: ...
     def unique(self, level=...): ...
-    def to_frame(  # type: ignore[override]
+    def to_frame(  # type: ignore[override]  # pyright: ignore[reportIncompatibleMethodOverride]
         self,
         index: bool = True,
         name: list[HashableT] = ...,