[TASK] Clean up PHPDoc comments in ext:felogin

Since ext:felogin already uses strict type declarations
for function arguments and return types, various
parameter- and return-type declarations in PHPDoc
comments can safely be removed.

With this patch the following changes are applied:

* removed superfluous @param type declarations
* removed superfluous @return declarations
* removed non-thrown @throws annotations
* added missing function type declarations in tests

Used command:

> Build/Scripts/runTests.sh -s phpstanGenerateBaseline

Resolves: #98139
Releases: main, 11.5
Change-Id: I47749a748e808f6801928951397ed0bff8d6a115
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/75439


Tested-by: core-ci <typo3@b13.com>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>