Revert "NSearchableComboBox: add debouncing and visibility check to prevent CPU spikes"

This reverts commit e9859e07f5.

Widgets/NSearchableComboBox.qml

@@ -93,25 +93,15 @@ RowLayout {
     }
   }
 
-  // Debounce timer to prevent excessive filterModel calls
-  Timer {
-    id: filterDebouncer
-    interval: 16 // ~60fps
-    repeat: false
-    onTriggered: filterModel()
-  }
-
-  onSearchTextChanged: filterDebouncer.restart()
-  onModelChanged: filterDebouncer.restart()
+  onSearchTextChanged: filterModel()
+  onModelChanged: filterModel()
   Component.onCompleted: filterModel()
 
   // Watch for model content changes (e.g., async font loading)
-  // Only when component is actually visible to avoid wasting CPU
   Connections {
     target: root.model
-    enabled: root.visible && root.opacity > 0
     function onCountChanged() {
-      filterDebouncer.restart();
+      filterModel();
     }
   }