Breaking: #96517 - TMENU.collapse TypoScript removed

See forge#96517

Description

The collapse TypoScript property of TMENU is removed without substitution.

When set, active TMENU items previously linked to their parent page, which was primarily a use case for GMENU_LAYERS, which was removed in TYPO3 v6.0.

Impact

Setting this TypoScript option has no effect anymore.

Affected Installations

TYPO3 installations with TMENU definitions having this option set which is highly unlikely.

Migration

Use a custom user function or the PSR-14 FilterMenuItemsEvent event to modify the menu items.