[TASK] Streamline AbstractUserAuthentication->removeCookie() usage

This change unifies TYPO3 Cores handling
of calling the mostly internal call of removeCookie()
method.

Functionality regarding getCookie() is also
simplified in order to consolidate all
cookie-related methods in AbstractUserAuthentication.

Resolves: #99209
Releases: main
Change-Id: I2790d454c2300fb925df89c23f0c29fcd3496941
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/76843


Tested-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>