fix(google-maps): error when minified through closure #24897
                
     Merged
            
            
          
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In #24865 the access of the global
MarkerClustererclass changed to go through thewindow. This causes a runtime error for apps minified through Closure, because the name is no longer minified and it doesn't align with the minified class name on thewindow. These changes move around our code so that we reference the clusterer without going through thewindow.