IMPORTANT: building against Qt 6.11.0 does NOT work. The .dmg when you install extracts nothing at all
Fix a typo in flags passed to codesign: should be --options not --option, which may explain why the --options runtime wasn't applied to the install .app itself
I also updated the target branch onto installer-framework 4.11.0: https://github.com/jmarrec/installer-framework/tree/QTIFW-3084-more-4_11_0
And Updated qt6 static to 6.9.1 (from 6.7.2) since I couldn't build with my macOS 26.5 with clang 21 (and even then, had to cherry pick two commits for 6.9.1, and one for 6.11.0...)
Full Changelog: v5.0.0-dev-with-fixup...v4.11.0-Patched