Subfolder impots do not always show up correctly

There is an issue with subfolders.

Steps to reproduce:

• Create a project
• Select File -> new file -> Qt Quick Files -> Qt Quick File and click "Choose"
• Give component name "Testqml1"
• For Path, select "Browse"
• (In choose directory window) Create folder "Testing" and under that folder, two subfolders "Sub1" and "Sub2"
• Select "Testing" folder, so that Testqml1 is saved directly under it
• Create new Qt Quick File "Testqml2" and save it under "Sub1" folder
• Create new Qt Quick File "Testqml3" and save it under "Sub2" folder
• Double click "Testqml2.qml" in Projects view
• Click + in Components view
• -> Import list should show ../Sub2 but it doesn't
• -> Similarly import list should show ../Sub1 when Testqml3 is open but it doesn't
• If Testqml1.qml file is deleted, subfolders start to show imports correctly