Fix Bluetooth scanning bailing after device discovery

The script was exiting immediately after showing "Devices found: 14" because
the timeout command returns exit code 124, which caused the script to bail
due to 'set -euo pipefail'. Added '|| true' to wait and bluetoothctl scan off
commands to allow the script to continue executing and display the device list.

install_kiosk_0.9.6-2.sh:7185-7186

install_kiosk_0.9.6-2.sh

@@ -7182,8 +7182,8 @@ addon_bluetooth() {
                 fi
             done
 
-            wait $scan_pid 2>/dev/null
+            wait $scan_pid 2>/dev/null || true
-            bluetoothctl scan off 2>/dev/null
+            bluetoothctl scan off 2>/dev/null || true
 
             echo
             echo