replacing loops.pause -> pause, loops.forever -> forever

libs/core/timer.ts

@@ -41,7 +41,7 @@ namespace control {
         //% blockId=timerPauseUntil block="%timer|pause until (ms) %ms"
         pauseUntil(ms: number) {
             const remaining = this.millis() - ms;
-            loops.pause(Math.max(0, remaining));
+            pause(Math.max(0, remaining));
         }
     }