Updating the signed route middleware to check for relatively signed URLs

[BrandonSurowiec]

Came across this situation today, where I needed to verify a relative signed route and discovered the middleware doesn't have support for this out of the box:

Route::get('foo')->middleware('signed:relative');

We're forced to write our own middleware class (not the end of the world) or a middleware check via a Closure in the controller.

There was a rejected PR for this very thing 6 months ago: #30336

Would it be considered if resubmitted?

[BrandonSurowiec]

Submitted a PR and it was accepted: #33137