fix numpygh-19056

Author: ismaelJimenez

numpy/core/numeric.pyi

@@ -238,6 +238,6 @@ def isclose(
     equal_nan: bool = ...,
 ) -> Any: ...
 
-def array_equal(a1: ArrayLike, a2: ArrayLike) -> bool: ...
+def array_equal(a1: ArrayLike, a2: ArrayLike, equal_nan: bool = ...) -> bool: ...
 
 def array_equiv(a1: ArrayLike, a2: ArrayLike) -> bool: ...