[10x] Allow calling getControllerClass on closure-based routes #46411
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Follow-up to #46332.
Currently calling
getControllerClass
on anyRoute
is allowed, but throws an exceptionTypeError: str_contains(): Argument #1 ($haystack) must be of type string, Closure given
whenever the route is closure based. This makes checking a route collection for routes using a specific controller quite hard.This PR adds a fallback value of
null
for these cases, which is much easier to handle than the exception.