leaudio: Fix removing CISes from the local storage

Remove reduntant UpdateConfiguration call to connection manager when
there is no active cises.

Also make sure that cig structure is updated before connection_manager
is called, as connection manager is getting CIS state from this
structure.

Bug: 331775328
Flag: EXEMPT, regression tested with unit tests.
Test: atest bluetooth_le_audio_test
Change-Id: Ib9933baabf36c6aa424aaf42b1ccaeb0f89bb6cd