Trigger nearby search after map load (#737)

Modify the initial search to trigger after the map has loaded.

Author: willum070

samples/place-nearby-search/index.ts

@@ -29,8 +29,10 @@ async function initMap() {
 
     infoWindow = new InfoWindow();
 
-    // Kick off an initial search.
-    nearbySearch();
+    // Kick off an initial search once map has loaded.
+    google.maps.event.addListenerOnce(innerMap, 'idle', () => {
+        nearbySearch();
+    });
 }
 
 async function nearbySearch() {