Latte Dock NG v1.2.38

What's changed

Menu bar submenus no longer close when the pointer reaches them. The
dock previously reconfigured its window flags / plasma shell surface while
the Application Menu widget reported NeedsAttentionStatus; on Wayland
that invalidated the QMenu's child popup surfaces, closing the menu as soon
as the pointer entered a submenu.
Cascading submenus (kicker, etc.) no longer stay stuck open after the
pointer leaves them. The submenu windows steal the keyboard focus when they
open, which breaks the widget's own mouse-leave close timer, so the dock
now closes the submenu tree event-driven when the pointer leaves the menu
windows (tracked via Enter/Leave events — QCursor::pos() is stale on
Wayland once the pointer leaves the dock's surfaces).
The first-level menu stays open on pointer-leave (matching the official
panel behaviour) and closes on click-outside (hideOnWindowDeactivate
restored to its default).
Fixed a segfault while interacting with a cascading menu: destroyed
popup/menu windows are now removed from the pointer tracker so the deferred
close check never dereferences a dangling pointer.

New source-contract tests lock the NeedsAttentionStatus window handling,
the hideOnWindowDeactivate default, the event-driven submenu close, and
the dangling-pointer guard.