Performance problem affecting domain access

Problem/Motivation

There is this problem affecting Domain access module: https://www.drupal.org/project/domain/issues/3232343 📌 Domain Config loading is resource intensive Needs work where some improvements was made on how the path processor aquires the route name and route parameters to avoid instantiating a new Url object, causing heavy overload.

Since the class DomainEntitySourcePathProcessor is largely a copy of the DomainSourcePathProcessor, these improvements would help to avoid the same type of performance loss in this module.

Remaining tasks

The related issue is not yet commited into Domain access module, so there could be other changes there, it seems adviseable to track the other issue.