Fix/suppress PMD CompareObjectsWithEquals findings (#11476)

Newer PMD versions discover more CompareObjectsWithEquals findings.

Related to https://github.com/openhab/static-code-analysis/pull/423

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

bundles/org.openhab.automation.pwm/src/main/java/org/openhab/automation/pwm/internal/handler/state/State.java

@@ -50,6 +50,7 @@ public abstract class State {
     /**
      * Sets a new state in the state machine.
      */
+    @SuppressWarnings("PMD.CompareObjectsWithEquals")
     public synchronized void nextState(Function<StateMachine, ? extends State> nextState) {
         if (context.getState() != this) { // compare identity
             return;