Loop is not neccessary for checking createSelectorForSilentRouteProviders when first routeProvider is not IActionHttpMethodProvider (#10683)

This is just some code cleanup that makes the intent of some complicated code more clear.

src/Mvc/Mvc.Core/src/ApplicationModels/DefaultApplicationModelProvider.cs

@@ -565,6 +565,7 @@ namespace Microsoft.AspNetCore.Mvc.ApplicationModels
                 if (!(routeProvider is IActionHttpMethodProvider))
                 {
                     createSelectorForSilentRouteProviders = false;
+                    break;
                 }
             }