AppletQuickItem: fix crash when applet is stopped by DBus service
When an applet is stopped by its DBus service, the applet will be deleted immediately in the system tray before AppletQuickItem is deleted, so accessing the applet pointer in dtor will cause a crash. However, reducing the preload weight in AppletQuickItem::init() can achieve the same effect because the preload weight is also read there initially.
SENTRY: PLASMA-WORKSPACE-FJG FIXED-IN: 6.2.1
Edited by Fushan Wen