graphics/kvantum: update to 1.0.4

V1.0.4
---------
 * Added a workaround for Qt6's double click problem with window dragging.
 * Added a workaround for Qt6's window dragging when the cursor is outside the
   widget after the drag is finished (previously, its hover state would
   persist).
 * Don't start window dragging if a popup menu is shown and closed quickly
   (may happen very rarely).
 * Added 1px to button arrow margin.
 * Considered more details in drawing menu arrows of buttons (especially when
   QToolButton is null).
 * Removed button contents shift (it was useless and inconsistent).
 * Added a pushbutton with menu to kvantumpreview.
 * To find the sunken button that has triggered a menu, check whether that menu
   really belongs to it.
 * Improved the workaround for Qt's hover bug in buttons.
 * Made menu shortcuts a little paler than menu texts.
 * Added a workaround for LibreOffice's header view.
 * Removed the old HDPI workaround.

V1.0.3
---------
 * Workaround for a rare case of stylesheet interference in spinboxes.
 * Disabled "ChangeSelectionColor" in all KDE color schemes because of its
   buggy behavior.
 * Respect lack of `scaledContents` in `QLabel` with large pixmaps (don't scale
   down large label images when they aren't supposed to be scaled).
 * Don't try to animate frameless scroll-areas.
 * Changed the default layout spacing to 3px.
 * Don't enforce minimum height of spinbox (tolerate bad layouts like that of
   Qt Designer's view items).
 * Ignore the key "text.margin" with group-boxes.
 * Set the minimum contents height of tabs to 16px.


(pin)