Resolve "pqMultiViewWidget needs to be refactored"
Instead of creating a hierarchy of QSplitter to support ParaView's hierarchical view layout, we now use a new layout subclass, pqHierarchicalGridLayout. Together with pqHierarchicalGridWidget pqHierarchicalGridLayout support interactive resizing.
The tests were updated using the following command line on linux:
> git grep -l qt_tabwidget_stackedwidget/MultiViewWidget | \
xargs sed -i -e "s/qt_tabwidget_stackedwidget\/(MultiViewWidget[[:digit:]]\).*\/Frame/qt_tabwidget_stackedwidget\/\1\/Container\/Frame/g"
Closes #18832 (closed)
Edited by Utkarsh Ayachit