[6.x] Throw RouteNotFoundException instead of InvalidArgumentException

[amaelftah]

instead of using InvalidArgumentException when route is not defined . we will throw symfony RouteNotFoundException . same as symfony MethodNotAllowedHttpException in Route Collection

that will help further in identifying the exception for more ideas . for example in ignition.

[GrahamCampbell]

If RouteNotFoundException doesn't extend InvalidArgumentException, then this is breaking, and will need to go to the 7.x branch instead please.

[amaelftah]

@GrahamCampbell it extends InvalidArgumentException

[driesvints]

@taylorotwell @Te7a-Houdini seems to be correct. Re-opening this for you to review.