2D: Add manual test for PieModelMapper


This manual test is for testing features of PieModelMapper.

Pick-to: 6.12
Task-number: QTBUG-151153
Assisted-by: Claude Code
Change-Id: I5889865f7df49378351a1c53e7cff58328a38a31
Reviewed-by: Tomi Korpipaa <tomi.korpipaa@qt.io>
commitc434242e3ab2f91e2682fff8ef0c33dbd160709c
parentb934f2d926cc840481e7a5e31730bc5c77200f0c
authorSami Varanka <sami.varanka@qt.io>
committerSami Varanka <sami.varanka@qt.io>
commit timeMon, 12 Oct 2026 07:35:13 +0000