🏷️ fix stubtest error in _core._multiarray_umath

Author: jorenham

.mypyignore-todo

@@ -8,7 +8,6 @@ numpy(\..+)?\.floating.as_integer_ratio
 numpy(\..+)?\.complexfloating.__hash__
 numpy(\..+)?\.complexfloating.__complex__
 
-numpy\._?core(\._multiarray_umath|\.multiarray)\.error
 numpy(\._core(\.memmap)?|\.matlib)?\.memmap\.__new__
 numpy(\.matrixlib(\.defmatrix)?|\.matlib)?\.matrix\.__new__
 numpy(\.lib\._polynomial_impl|\.matlib)?\.poly1d\.integ

src/numpy-stubs/_core/_multiarray_umath.pyi

@@ -385,7 +385,8 @@ NAN: Final[float] = ...
 
 ###
 
-error: Final = Exception
+# using `Final` or `TypeAlias` will break stubtest
+error = Exception
 
 tracemalloc_domain: Final[int] = ...
 _extobj_contextvar: _contextvars.ContextVar[CapsuleType]