[Routing] Don't rebuild cache when controller action body changes #61653
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Currently, whenever the body of a controller action that uses attributes for routing is changed, the router cache is rebuilt. This can get a little annoying when you have many routes, as the rebuild time becomes noticeable, in my case, over 2 seconds.
This PR switches to using
ReflectionClassResource
andGlobResource
to prevent the cache from being rebuilt unnecessarily.I'm not sure how best to test this, or if there's even anything to test. Any suggestions would be appreciated.