Change QList's insert() and emplace() to always invalidate [pos, end())

Drop the "move left if pos <= size / 2" path in favor of reference
stability of insert and emplace operations

Leave the insert(0, ...) and emplace(0, ...) as special cases for
prepend optimization as invalidating [begin, end()) practically means
that we can reallocate behind the scenes

Doing this also simplifies the code a bit

Task-number: QTBUG-93019
Change-Id: I7c248f96d687e94a6a38f81ade901619ff2b4733
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
(cherry picked from commit 5e76c2acff2c70f2893306b16aeba230f3d6114a)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

0 files changed, 0 insertions, 0 deletions