Moved TISBinder lifecycle handling to TISBinderHelper

- All instances where we used TISBinder will now use TISBinderHelper#getBinder. This will allow TISBinderHelper to handle its lifecycle
- Moved all instance of TaskbarManager and OverviewCommandHelper as well since TIS and TISBinder handle their lifecycles
- Cleaning up launcher instance from TaskbarManager when TISBinder is being destroyed

Flag: not needed
Bug: 283490010
Test: ran launcher and performed gestures
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:248794e698417b1156bf911adb31682186fe2e34)
Change-Id: I8415a6b2c1dba0776e7c0e1ee32ad3c683100bde