Rework ThingActions (#8755)

* Remove duplication by making use of default Java generated exceptions
* Make ThingActions labels/descriptions more consistent

Signed-off-by: Wouter Born <github@maindrain.net>

bundles/org.openhab.binding.network/src/main/java/org/openhab/binding/network/internal/action/NetworkActions.java

@@ -57,11 +57,7 @@ public class NetworkActions implements ThingActions {
         }
     }
 
-    public static void sendWakeOnLanPacket(@Nullable ThingActions actions) {
-        if (actions instanceof NetworkActions) {
-            ((NetworkActions) actions).sendWakeOnLanPacket();
-        } else {
-            throw new IllegalArgumentException("Actions is not an instance of NetworkActions");
-        }
+    public static void sendWakeOnLanPacket(ThingActions actions) {
+        ((NetworkActions) actions).sendWakeOnLanPacket();
     }
 }