[BUGFIX] Fix session update with backend "Stay logged in" button

For unknown reasons the /ajax/login/refresh
route has never been used (all the way back to v6),
to request a session timeout update.

Instead the route /ajax/login/timedout, *without* the
skipSessionUpdate=1 parameter has been used to
refresh an existing session.

With the introduction of configurable route parameters
in #81409 this inconsistency wasn't noticed and the
skipSessionUpdate parameter has been moved into the
route-configuration, which meant /ajax/login/timedout was
always called with skipSessionUpdate=1,
even as result of the "Stay logged in" button, where
a session update was intended.

Use the dedicated /ajax/login/refresh route
in order to actually refresh the session.

Releases: main, 11.5, 10.4
Resolves: #96978
Related: #81409
Change-Id: I6e7ac78fdfae49fa07ac6b75d64dd1c381ad7e2b
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/73625


Tested-by: core-ci <typo3@b13.com>
Tested-by: Benjamin Franzke <bfr@qbus.de>
Reviewed-by: Benjamin Franzke <bfr@qbus.de>