time: fix repetitive time.now().local().local().local() offsetting the time further and further (#13861)

vlib/time/time_test.v

@@ -254,3 +254,12 @@ fn test_since() {
 	d2 := time.since(t1)
 	assert d2 >= 40_000_000
 }
+
+// issue relate https://github.com/vlang/v/issues/13828
+// problem: the local method add 2h on the time in a Linux machine
+// the other machine are not tested in a local env
+fn test_recursive_local_call() {
+	now_tm := time.now()
+	assert now_tm.str() == now_tm.local().str()
+	assert now_tm.local().str() == now_tm.local().local().str()
+}