devel/qtcreator: Update to 18.0.0

Announcement:
https://www.qt.io/blog/qt-creator-18-released
Changes:
https://code.qt.io/cgit/qt-creator/qt-creator.git/about/dist/changelog/changes-18.0.0.md?h=18.0

MFH: 2025Q4
(cherry picked from commit aac0a76c3d6486bc4d24b8e4dfdc69a065a51e1a)