#Needs subsystem maintainer review

rebased `9.2.0` against latest `11.x` branch and pushed to `2903336-allow_tokens_for_url` fork branch. I suggest closing MR !1076 and hiding the `9.2.0` fork branch to avoid confusion.
Attaching the patch from the new MR

Not sure why I tagged for sub-maintainer but that was when we just got NRQI off the ground.

Ran the test-only feature here https://git.drupalcode.org/issue/drupal-3126761/-/jobs/6378866

1) Drupal\Tests\Core\PathProcessor\PathProcessorFrontTest::testProcessInbound with data set "frontpage with query parameters and request query parameters" ('/node?example=muh', '/', '/node', ['muh', 'buh'], ['buh'])
Failed asserting that two arrays are equal.
--- Expected
+++ Actual
@@ @@
 Array (
     'example' => 'muh'
-    'example2' => 'buh'
 )
/builds/issue/drupal-3126761/core/tests/Drupal/Tests/Core/PathProcessor/PathProcessorFrontTest.php:41
2) Drupal\Tests\Core\PathProcessor\PathProcessorFrontTest::testProcessInbound with data set "frontpage with query parameters and replacement request query parameters" ('/node?example=muh', '/', '/node', ['cuh', 'buh'], ['cuh', 'buh'])
Failed asserting that two arrays are equal.
--- Expected
+++ Actual
@@ @@
 Array (
-    'example' => 'cuh'
-    'example2' => 'buh'
+    'example' => 'muh'
 )

The actual fix core/lib/Drupal/Core/PathProcessor/PathProcessorFront.php makes complete sense.

LGTM!