Merge branch '4.4'

* 4.4:
  [Security] Minor tweak in the impersonation explanation
  Remove hint that redis does not support DelayStamp

Author: OskarStark

messenger.rst

@@ -888,10 +888,6 @@ The Redis transport uses `streams`_ to queue messages.
 To use the Redis transport, you will need the Redis PHP extension (^4.3) and
 a running Redis server (^5.0).
 
-.. caution::
-
-    The Redis transport does not support "delayed" messages.
-
 A number of options can be configured via the DSN or via the ``options`` key
 under the transport in ``messenger.yaml``:
 

security/impersonating_user.rst

@@ -85,9 +85,9 @@ role to the users that need it.
 Knowing When Impersonation Is Active
 ------------------------------------
 
-During impersonation, the user is provided with a special role called
-``ROLE_PREVIOUS_ADMIN``. In a template, for instance, this role can be used
-to show a link to exit impersonation:
+When a user is being impersonated, Symfony grants them a special role called
+``ROLE_PREVIOUS_ADMIN`` (in addition to the roles the user may have). Use this
+special role, for instance, to show a link to exit impersonation in a template:
 
 .. code-block:: html+twig