QmlJSEditor: QuickToolBar: Corrupt highlighting when prepending property

Steps to reproduce:

• have highlight matching parentheses enabled
• open / create a simple QML file
• place cursor onto an item that might have a color property (if it has already on remove it first, make sure there are no properties which might come before color (alphabetically))
  • small light-bulb should appear
  • click on it
  • Quick Tool Bar should appear
• set the color to any value by using the Quick Tool Bar

Current result:

• highlight of the open parentheses is drawn now for the newly added property as well

Expected result:

• no highlight change (or highlight of the parentheses is removed)