manual-tests: update render-qml-to-texture test


Pick-to: 6.12 6.11 6.8
Change-Id: I588d0a33329b222bd3c7e4d4024adc6a3d2ce553
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>
commit58600b36c4217bb9b4ac18481eab11ca1ff179b4
parentf0718e28d242ed3f892d14c6cdb718d4ae8bcc2e
authorMauro Persano <mauro.persano@kdab.com>
committerMauro Persano <mauro.persano@kdab.com>
commit timeThu, 20 Aug 2026 13:43:33 +0000