Bug: UwbConnector notification handler doesn't handle when driver closes the HANDLE

[abeltrano]

Describe the bug
When the driver closes a file HANDLE, the UwbConnector continues looping forever trying to issue the DeviceIoControl call.

Steps To Reproduce
Start a session with nocli, then forcibly unload the driver.

Expected behavior
UwbConnector::HandleNotifications should properly handle the return value E_INVALID_HANDLE. At minimum, it must discard the current HANDLE it is using.

Actual behavior
UwbConnector::HandleNotifications loops forever, repeatedly calling DeviceIoControl with an invalid HANDLE.