Only use equal_nan=True to compare float datasets

tests/test_reference_runs/test_pre_deployment.py

@@ -75,7 +75,9 @@ def validate_file(
                 eq = False  # One is an array, the other not
             elif isinstance(ref_arr, np.ndarray):
                 # Both arrays
-                eq = np.array_equal(ref_arr, out_arr, equal_nan=True)
+                nanable = np.issubdtype(ref_arr.dtype, np.floating) \
+                          or np.issubdtype(ref_arr.dtype, np.complexfloating)
+                eq = np.array_equal(ref_arr, out_arr, equal_nan=nanable)
             else:
                 # Both single values
                 eq = ref_arr == out_arr