Fixed asset completer model for source handle picker.

Signed-off-by: Chris Galvan <chgalvan@amazon.com>

Gems/ScriptCanvas/Code/Editor/View/Widgets/SourceHandlePropertyAssetCtrl.h

@@ -29,12 +29,16 @@ namespace ScriptCanvasEditor
         AzToolsFramework::AssetBrowser::AssetSelectionModel GetAssetSelectionModel() override;
         void PopupAssetPicker() override;
         void ClearAssetInternal() override;
+        void ConfigureAutocompleter() override;
 
         void SetSourceAssetFilterPattern(const QString& filterPattern);
 
         AZ::IO::Path GetSelectedSourcePath() const;
         void SetSelectedSourcePath(const AZ::IO::Path& sourcePath);
 
+    public Q_SLOTS:
+        void OnAutocomplete(const QModelIndex& index) override;
+
     private:
         //! A regular expression pattern for filtering by source assets
         //! If this is set, the PropertyAssetCtrl will be dealing with source assets