[RESTRICT AUTOMERGE] Add protections agains use-after-free issues if cancel()...

[RESTRICT AUTOMERGE] Add protections agains use-after-free issues if cancel() or queue() is called after a device connection has been closed.

This is a backport of ag/7528082 and ag/20033068.

Bug: 132319116
Bug: 130571162
Bug: 204584366
Test: CTS Verifier: USB Accessory Test & USB Device Test
Change-Id: I952ab566e26a808997e362dc85ebd1d8eb4574b9