updated == and != to return literal

Author: randolf-scholz

pandas/_libs/tslibs/nattype.pyi

@@ -157,8 +157,8 @@ class NaTType:
     @property
     def qyear(self) -> float: ...
     # comparisons
-    def __eq__(self, other: object, /) -> bool: ...
-    def __ne__(self, other: object, /) -> bool: ...
+    def __eq__(self, other: object, /) -> Literal[False]: ...
+    def __ne__(self, other: object, /) -> Literal[True]: ...
     def __lt__(self, other: Self | _TimeLike, /) -> Literal[False]: ...
     def __le__(self, other: Self | _TimeLike, /) -> Literal[False]: ...
     def __gt__(self, other: Self | _TimeLike, /) -> Literal[False]: ...