Without this, comphelper::dispatchCommand() doesn't work on the current
frame. This causes e.g. undo not working when only a given view is
allowed to do undo.

In the desktop case vcl::Window::ImplGrabFocus() calls both
SfxViewFrame::MakeActive_Impl() and
framework::Desktop::setActiveFrame(), but in the LOK case the first was
called directly, that's how the active frame was outdated.

Change-Id: If97a9de316b4c8dd49e55cd273bdb2dfe9866f38
Reviewed-on: https://gerrit.libreoffice.org/28032Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>