search results do not point to correct line after editing text file by removing/addition lines

Steps:
1. Press Ctrl+Shift+F to search in all projects for some string.
2. Open any file where that string is found and remove or add lines on start of that file.
3. Double click on search results entry related to that edited file.
Problem: observe that the search results entry does not points to correct line of text.

Better behaviour: search results entries should be updated after `BaseTextEditorWidget::editorContentsChange` as it is already implemented with marks.