Added test to ensure array push is immutable (#4361)

added test to ensure array push is immutable

src/wasm-lib/tests/executor/inputs/no_visuals/array_elem_push_fail.kcl

@@ -0,0 +1,3 @@
+arr = [1, 2, 3]
+pushedArr = push(arr, 4)
+fail = arr[3]

src/wasm-lib/tests/executor/no_visuals.rs

@@ -174,3 +174,7 @@ gen_test_parse_fail!(
 gen_test!(add_lots);
 gen_test!(double_map);
 gen_test!(array_elem_push);
+gen_test_fail!(
+    array_elem_push_fail,
+    "undefined value: The array doesn't have any item at index 3"
+);