tests: add regression tests for typeof map and array of fns (#8458)

vlib/v/tests/map_and_array_with_fns_test.v

@@ -57,3 +57,17 @@ fn test_map_with_fns() {
 		assert func('ccccccc', '') == 27
 	}
 }
+
+fn foo3(a string) int {
+	return 10 + a.len
+}
+
+fn test_map_and_array_with_fns_typeof_and_direct_call() {
+	a := [foo3]
+	assert typeof(a).name == '[]fn (string) int'
+	assert a[0]('hello') == 15
+	b := {'one': foo3}
+	assert typeof(b).name == 'map[string]fn (string) int'
+	// TODO: enable this
+	// assert b['one']('hi') == 12
+}