fix(google-maps): prevent blank space during page transitions (#715)

Author: harlan-zw

packages/script/src/runtime/components/GoogleMaps/ScriptGoogleMaps.vue

@@ -479,9 +479,11 @@ onBeforeUnmount(() => {
 // so anything after an `await` runs as a detached microtask.
 // Note: do NOT null mapsApi here — children unmount AFTER onBeforeUnmount
 // and need mapsApi.value for clearInstanceListeners in their cleanup.
+// Note: do NOT remove map DOM here — during page transitions the leave
+// animation is still playing, and tearing out the iframe leaves blank
+// space. Vue removes the parent element on actual unmount.
 map.value?.unbindAll()
 map.value=undefined
-mapEl.value?.firstChild?.remove()
 libraries.clear()
 queryToLatLngCache.clear()
 })