fix: reset duplicate-suppression state and stale step change on watch initialization

Author: TechieGuy12

src/Configuration/Step.cs

@@ -83,6 +83,11 @@ public override void Initialize()
                 AddVariables();
             }
 
+            // Clear stale change state so OnNeedsCompleted doesn't use a previous run's change
+            _change = null;
+            _trigger = default;
+            _processingCorrelationId = null;
+
             base.Initialize();
         }
 

src/Configuration/Watch.cs

@@ -1057,6 +1057,17 @@ public override void OnCompleted(object? sender, TaskEventArgs e)
             base.OnCompleted(sender, e);
         }
 
+        public override void Initialize()
+        {
+            lock (_changeLock)
+            {
+                _lastChange = null;
+                _lastWriteTime = default;
+                _ignoreNextChange = false;
+            }
+            base.Initialize();
+        }
+
         public override void OnNeedsCompleted(object? sender, TaskEventArgs e)
         {
             Logger.WriteLine(