* test: update spec for sibling adjacent mouseenter/mouseleave events
there is a regression introduced by #33310 - this would have catched that
* fix: fixup regression for mouseenter/mouseleave events introduced by #33310
the old logic only worked for parent-child movement since it checked for the relatedTarget to contain the delegateTarget - this should be fixed with this
Co-authored-by: XhmikosR <xhmikosr@gmail.com>