md-dialog can no longer receive references to objects via locals or resolve #3651
Description
the change committed in bee0523 that fixes issue #2676 has broken 'md-dialog' ability to inject objects into the dialog.
I believe that locals & resolve functions that return an object should pass that object to the 'md-dialog' instead of a copy of that object. This is exactly how router libraries works with resolve/data functions. Also, I believe that the whole concept of angular injection is to pass the original reference into scope, not a copy.
In my use case, using angularfire for server synchronisation. If a user needs to change a record a dialog is shown with a form, user makes the change and then clicks save. The save returns a promise that then allows the object to be saved back to the firebase location. Because the promise is now returning a copy of the object instead of the original object the save method fails.
Please consider removing this commit from material.