x11-toolkits/qt6-declarative: Add upstream patches
Fix crashes when using popup windows. (QTBUG-131898)
Use Qt version in Qt6QmlFindQmlscInternal.cmake instead of user-project-
defined PROJECT_VERSION. (QTBUG-132421)
MFH: 2025Q1
(cherry picked from commit fed1c8ad74290637dcd57b0f623c5a96fd82106d)