LeAudio: Notify Hal after reconfiguration

Bug: 241795539
Bug: 239651157
Tag: #feature
Test: atest --host bluetooth_le_audio_test bluetooth_le_audio_client_test --no-bazel-mode
Change-Id: Icbe7666789d4a4df248405a39f11d0e753cf5f23
Merged-In: Icbe7666789d4a4df248405a39f11d0e753cf5f23
(cherry picked from commit f7029ac1)