Add a setting to bypass the uniquifier if a path alias already exists

unfortunately unique_alias_checker module does not work with node:origin:title token.

+++ b/src/PathautoGenerator.php
@@ -247,6 +247,12 @@ class PathautoGenerator implements PathautoGeneratorInterface {
+      throw new \InvalidArgumentException('Path alias should be unique.');

I think we can change this error message to be a bit more informative. Something like:

throw new \InvalidArgumentException(sprintf('The automatically generated alias %s conflicted with an existing alias.', $alias));

would help admins figure out which are the problematic aliases.

Earlier patch didn't apply. Adding again with informative error message.

I'm not convinced that this feature is important enough to be added to the main module. the uniquifier is a service, the module that was created could implement this approach by wrapping the service and implementing this logic there.

To be added, tests would be required and a merge requests, patches are no longer tested.