TST: skip tests of binary funcs w/scalar on older numpies

NumPy < 2 fails to promote an empty f32 array with a scalar, returns an empty f64 array

Author: ev-br

numpy-1-21-xfails.txt

@@ -212,3 +212,6 @@ array_api_tests/test_special_cases.py::test_iop[__ifloordiv__(x1_i is -infinity
 array_api_tests/test_special_cases.py::test_iop[__ifloordiv__(x1_i is -infinity and isfinite(x2_i) and x2_i < 0) -> +infinity]
 array_api_tests/test_special_cases.py::test_iop[__ifloordiv__(isfinite(x1_i) and x1_i > 0 and x2_i is -infinity) -> -0]
 array_api_tests/test_special_cases.py::test_iop[__ifloordiv__(isfinite(x1_i) and x1_i < 0 and x2_i is +infinity) -> -0]
+
+# numpy < 2 bug: type promotion of asarray([], 'float32') and (np.finfo(float32).max + 1) -> float64
+array_api_tests/test_operators_and_elementwise_functions.py::test_binary_with_scalars_real

numpy-1-26-xfails.txt

@@ -66,3 +66,6 @@ array_api_tests/test_special_cases.py::test_iop[__ifloordiv__(x1_i is -infinity
 array_api_tests/test_special_cases.py::test_iop[__ifloordiv__(x1_i is -infinity and isfinite(x2_i) and x2_i < 0) -> +infinity]
 array_api_tests/test_special_cases.py::test_iop[__ifloordiv__(isfinite(x1_i) and x1_i > 0 and x2_i is -infinity) -> -0]
 array_api_tests/test_special_cases.py::test_iop[__ifloordiv__(isfinite(x1_i) and x1_i < 0 and x2_i is +infinity) -> -0]
+
+# numpy < 2 bug: type promotion of asarray([], 'float32') and (finfo(float32).max + 1) gives float64 not float32
+array_api_tests/test_operators_and_elementwise_functions.py::test_binary_with_scalars_real