[qt/qt/qtdeclarative]: Summary of bulk changes made

Git repository change summary for qt/qt/qtdeclarative
Pushed by mirror-service into branch 'dev'.
Changed from a9d6fb7dabd5a3cee8efe4a23c2162f0ad354b57 to b8307471411e798717c3aa51b37cbb2f57c4006c
Acknowledgement was received that this change introduces only existing code that has been pushed to another public open source repository.

This change contains the following new commits:

Git commit b8307471411e798717c3aa51b37cbb2f57c4006c by Tor Arne Vestbø on 28/07/2026 at 22:18..
qmltyperegistrar: Preserve import path order when merging qt.conf files

The partial *_qt.part.conf files written for each executable list QML
import path roots, one per line, and are merged per directory into the
qt.conf placed next to the binary. Their order matters at run time: the
QML engine resolves a module against its import paths in order and uses
the first match, so of two paths providing the same module, the one
listed first wins.

The merge collected the paths in a QMultiHash and read them back with
values(), which returns them from the most recently inserted to the
least recently inserted. The merged qt.conf therefore listed the paths
in the reverse of the order they were written in, silently inverting the
precedence intended by whoever wrote the partial.

Collect them in a QHash of QStringList instead, so that the order within
each partial file is preserved. As a side effect each qt.conf is now
written once rather than once per import path, QMultiHash::keys() having
repeated every key once per value.

The order between separate partial files in the same directory remains
that of QDirIterator, and so arbitrary.

Add a test that drives mergeQtConfFiles() over a partial with a known
line order and checks both that the order survives and that duplicate
paths collapse onto their first occurrence.

Task-number: QTBUG-101338
Pick-to: 6.12
Change-Id: I66c276fc66dded9ab4f15c6cbb65c647c654307f
Reviewed-by: Fabian Kosmale <[email protected]>
https://invent.kde.org/qt/qt/qtdeclarative/-/commit/b8307471411e798717c3aa51b37cbb2f57c4006c