[staging-next] qt6.qtdeclarative: backport another common Plasma crash fix (#479804)

--- a/src/qml/jsruntime/qv4qobjectwrapper.cpp

+++ b/src/qml/jsruntime/qv4qobjectwrapper.cpp

@@ -1583,10 +1583,9 @@

                     o->deleteLater();

             } else {

                 // If the object is C++-owned, we still have to release the weak reference we have

-                // to it.

-                ddata->jsWrapper.clear();

-                if (lastCall && ddata->propertyCache)

-                    ddata->propertyCache.reset();

+                // to it. If the "main" wrapper is not ours, we should leave it alone, though.

+                if (ddata->jsWrapper.as<QObjectWrapper>() == this)

+                    ddata->jsWrapper.clear();

             }

         }

     }

      hash = "sha256-KMFurA9Q84qwuyBraU3ZdoFWs8uO3uoUcinfcfh/ps8=";

    })

    # Backport of https://codereview.qt-project.org/c/qt/qtdeclarative/+/704031

    # Fixes common Plasma crash

    # FIXME: remove in 6.10.3

    ./another-crash-fix.patch

    # https://qt-project.atlassian.net/browse/QTBUG-137440

    (fetchpatch {

      name = "rb-dialogs-link-labsfolderlistmodel-into-quickdialogs2quickimpl.patch";