Fix exception when stopping Thing (#20434)

Resolves #20433

Signed-off-by: Jacob Laursen <jacob-github@vindvejr.dk>

Author: jlaur

bundles/org.openhab.binding.bluetooth.bluez/src/main/java/org/openhab/binding/bluetooth/bluez/internal/BlueZBridgeHandler.java

@@ -111,13 +111,17 @@ public void dispose() {
 
         Future<?> job = discoveryJob;
         if (job != null) {
-            job.cancel(false);
+            job.cancel(true);
             discoveryJob = null;
         }
 
         BluetoothAdapter adapter = this.adapter;
         if (adapter != null) {
-            adapter.stopDiscovery();
+            try {
+                adapter.stopDiscovery();
+            } catch (DBusExecutionException e) {
+                logger.debug("Failed to stop discovery on adapter during disposal", e);
+            }
             this.adapter = null;
         }