Fix LE service discovery event cancelling SDP discovery

When disconnection or timeout event happens for LE service discovery, it
would now clean up whole control block, including classic SDP things.
If SDP is taking long time, i.e. due to problems with establishing
classic connection, this might cause service discovery to return partial
results.

Test: Bond with dual mode device that fails to connect on classic transport
Bug: 357902043
Bug: 360936118
Flag: com.android.bluetooth.flags.fix_le_evt_cancelling_sdp_discovery
Change-Id: Ic16c0d58815d6c1260dcf4f3250226c532d4f99f