[TASK] Clarify replacement for TSFE->storeSessionData()

Releases: master
Related: #85878
Resolves: #91248
Change-Id: I8eb19a7e7f2ac4527beb9befafc6b16cf79e99cd
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/64372


Tested-by: Björn Jacob <bjoern.jacob@tritum.de>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Alexander Schnitzler <git@alexanderschnitzler.de>
Tested-by: Benjamin Franzke <bfr@qbus.de>
Reviewed-by: Björn Jacob <bjoern.jacob@tritum.de>
Reviewed-by: Alexander Schnitzler <git@alexanderschnitzler.de>
Reviewed-by: Benjamin Franzke <bfr@qbus.de>

typo3/sysext/core/Documentation/Changelog/9.4/Deprecation-85878-EidUtilityAndVariousTSFEMethods.rst

@@ -42,6 +42,8 @@ Migration
 
 As all functionality has been set up via PSR-15 middlewares, use a PSR-15 middleware instead.
 
+The method :php:`storeSessionData()` should be replaced with :php:`TSFE->fe_user->storeSessionData()`.
+
 The methods :php:`addTempContentHttpHeaders()` and :php:`sendCacheHeaders()` are now incorporated
 within :php:`TSFE->processOutput()`. This function should be used, or rather add custom headers
 to a PSR-15 Response object if available.