Do not debounce disconnect while resetUsbGadget

When resetUsbGadget is requested, do not debounce disconnect to allow
falling back to the the default configuration. Also remove
accessory mode enter timeout messages to prevent leaving AOAP
enabled when resetUsbGadget is requested.

Backport of ag/20953426.

Bug: 260145166
Change-Id: I538f405312049846839297dc3835ec2ff7d75084
Merged-in: I538f405312049846839297dc3835ec2ff7d75084