fix(timer): setTimeout/setInterval support for boolean period (#7569)

* Fix setTimeout/setInterval can't be called with boolean period

* Add typings and a test

* Revert typings

* Ignore the wrong type

tns-core-modules/timer/timer.android.ts

@@ -16,6 +16,9 @@ function createHandlerAndGetId(): number {
 }
 
 export function setTimeout(callback: Function, milliseconds = 0, ...args): number {
+    // Cast to Number
+    milliseconds += 0;
+
     const id = createHandlerAndGetId();
     const invoke = () => callback(...args);
     const zoneBound = zonedCallback(invoke);
@@ -48,6 +51,9 @@ export function clearTimeout(id: number): void {
 }
 
 export function setInterval(callback: Function, milliseconds = 0, ...args): number {
+    // Cast to Number
+    milliseconds += 0;
+
     const id = createHandlerAndGetId();
     const handler = timeoutHandler;
     const invoke = () => callback(...args);