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


Pick-to: 6.12 6.11 6.8
Change-Id: I71e005955c3ab8fdd61b49136652fbc7542e8b30
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>
commit8c22ab61d1a606e2392da76d04231fbbb0989806
parent9d36e065349eba5018d5c1285559c1f21d4231b6
authorMauro Persano <mauro.persano@kdab.com>
committerMauro Persano <mauro.persano@kdab.com>
commit timeMon, 24 Aug 2026 17:11:20 +0000