WIP: Some investigations with Qt 6.5.3 [DO NOT MERGE]

[PeterPetrik]

Some investigations with Qt 6.5.3 on iOS

#2893

• Repeater misbehaves, when you filter in Q sort model, the change of rowCount() is not applied to repeater, so it will have some zombie elements. Interestigly beginModelReset/endModelReset fixes it, or also invalidate() calls
  (fixed in this PR atm)

#2892

• this is ScollView -> ColumnLayout, scrolling is possible but always pan back to top - not sure why
• it works if I remove Repeater and add there only simple elements
• it looks Repeater may have 0 implicitHeight
  (NOT fixed in this PR atm)

#2887

• it looks like ScrollView -> Column is not possible to scroll on iOS, replacing with ColumnLayout enables scrolling
  (somewhat fixed in this PR atm)
• we have also this is the project errors dialog and maybe somewhere else too

[PeterPetrik]

Reverting to qt652, closing this for now