improve: deflake WorkflowMultipleActivationIT (#3503)

Signed-off-by: Attila Mészáros <a_meszaros@apple.com>

Author: csviri

operator-framework/src/test/java/io/javaoperatorsdk/operator/workflow/workflowmultipleactivation/WorkflowMultipleActivationIT.java

@@ -76,6 +76,9 @@ void deactivatingAndReactivatingDependent() {
             () -> {
               var cm = extension.get(ConfigMap.class, TEST_RESOURCE1);
               assertThat(cm).isNull();
+              var cr =
+                  extension.get(WorkflowMultipleActivationCustomResource.class, TEST_RESOURCE1);
+              assertThat(cr).isNull();
             });
 
     ActivationCondition.MET = false;