aaudio service: prevent disconnected endpoints from being used

Also close the internal stream used by AAudioServiceEndpointShared.

This prevents a resource leak caused by an app not closing a
disconnected stream.
It also prevents an app from reopening a device that was just
disconnected.

Bug: 67664976
Test: test_bad_disconnect.cpp should get new device ID after disconnect
Change-Id: I9a234b5704d62af788064fdd352b63181ad7e559