Android: Invalidate services after a disconnect from the peripheral side

So far, invalidation only took place when the local/central side
disconnected the connection.

Task-number: QTBUG-50125
Change-Id: Ic01725d1b83e49ad7df6971d980b480f839d550b
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@theqtcompany.com>
Reviewed-by: Alex Blasche <alexander.blasche@theqtcompany.com>