Improve checks using PyArray_IsAnyScalar to verify scalars aren't compared to arrays

Author: avinashpancham

pandas/_libs/lib.pyx

@@ -581,7 +581,8 @@ def array_equivalent_object(left: object[:], right: object[:]) -> bool:
                     return False
             elif (x is C_NA) ^ (y is C_NA):
                 return False
-            elif np.size(x) != np.size(y):
+            # Only compare scalars to scalars and arrays to arrays
+            elif cnp.PyArray_IsAnyScalar(x) != cnp.PyArray_IsAnyScalar(y):
                 return False
             elif not (PyObject_RichCompareBool(x, y, Py_EQ) or
                       (x is None or is_nan(x)) and (y is None or is_nan(y))):