BUG: $GLOBALS['TSFE']->fe_user access in PageService, leads to Exception in v:menu in Typo3 v13

[NormenKD]

I have checked that the bug exists in the dev-development branch
Yes

I have checked that there are no already open issues or recently closed issues about this bug
Yes

Describe the bug
Using access restricted pages in Typo3 v13 results in an exception with v:menu:

(1/1) TypeError
array_intersect(): Argument #1 ($array) must be of type array, null given

Probably because $GLOBALS['TSFE']->fe_user has been removed in v13 (https://docs.typo3.org/m/typo3/reference-typoscript/main/en-us/AppendixA/Index.html#appendix-include-tsfe-feuser-migration):

vhs/Classes/Service/PageService.php

Lines 219 to 221 in 6fdbada

	$userIsLoggedIn = (is_array($GLOBALS['TSFE']->fe_user->user));
	$userGroups = $GLOBALS['TSFE']->fe_user->groupData['uid'];
	$userIsInGrantedGroups = (0 < count(array_intersect($userGroups, $groups)));

To Reproduce
Use v:menu in a template, use access restricted pages in page tree, maybe also set showAccessProtected="1" on a v13 system.

Expected behavior
No exception should be thrown.

Screenshots

Additional context
Another access to $GLOBALS['TSFE']->fe_user, which might be problematic in v13 (not sure):

https://github.com/FluidTYPO3/vhs/blob/development/Classes/ViewHelpers/Security/AbstractSecurityViewHelper.php#L358-L361