refactor(google-maps): move types reference in maps package

We need at least one `<reference types="google.maps" preserve="true" />` present in the Google Maps package in order to ensure that the .d.ts we publish has a reference to the types, however internally they need to be stripped.

These changes remove the reference that was randomly places in the clusterer types and will update the internal setup to drop the comment.

Author: crisbeto

MODULE.bazel.lock

@@ -6,8 +6,6 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
-/// <reference types="google.maps" preserve="true" />
-
 /**
  * Class for clustering markers on a Google Map.
  *

src/google-maps/deprecated-map-marker-clusterer/deprecated-marker-clusterer-types.ts

@@ -6,4 +6,8 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
+// We need this to ensure that the type reference is present in the generated .d.ts
+// that we publish to npm. Internally this is removed during import.
+/// <reference types="google.maps" preserve="true" />
+
 export * from './public-api';

src/google-maps/index.ts

@@ -6,8 +6,6 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
-/// <reference types="google.maps" preserve="true" />
-
 import {Marker} from '../marker-utilities';
 
 // This file duplicates the necessary types from the `@googlemaps/markerclusterer`