Break self -> animator -> lambda cycles in smooth switch and flat scale
by stopping animators and disconnecting value handlers on destroy. Drop
mutual OSD window/osd refs and clear the applet active-popup class ref.
Suspend the dock animation loop when nothing animates, pause the desktop
system info poller while unmapped, replace the OSD watchdog polling with
a single shot at expiry, lower the notch visualizer tick rate, and
cancel outstanding dock occlusion/rebuild timers on teardown.
sankalp
456545e6a6