Add a Vendor-dependent UCI Reason code for UWB OFF

Add a UCI reason code (sent in a SESSION_STATUS_NTF) for the scenario when UWB needs to be turned off due to Regulatory reasons.

Ran the "m android.hardware.uwb.fira_android-update-api" command to
update the generated AIDL API.

Bug: 267554906
Test: Compile make.com.google.android.uwb
Change-Id: I52d9f2dae203c3e2d3d26a8a5c30a2f2a969b591