csis: Make CSIS opportunistic when connecting from autoconnect

When CSIS is connected from Java it is expected to be Direct Connect,
otherwise CSIS should be treated as opportunistic service for LeAudio
devices.

Bug: 311578937
Test: atest bluetooth_csis_test
Tag: #feature
Change-Id: I23a4008457a43d56c005e630bda7146a57ebda37