GUI: bad game performance (fps) on opened deck editor in background

[JayDi85]

How to reproduce:

• open game and try tap/untap on attack - it works smooth; same for dialog moving over battlefield like disconnect;
• open deck editor with few cards in it;
• open game and try tap/untap on attack - now it will have bad performance due slow rendering;

Possible reason: xmage uses shared deck panel (pane) for all game panels and other GUI components, so swing somehow try to render all elements, even hidden under another elements. Can be related to wrong usages of invalidate, repaint or transparent background (the last one most perspective, see https://github.com/magefree/mage/issues/12261#issuecomment-2120352023).

[JayDi85]

Moving dialog over skip buttons also produce a slow performance:

[JayDi85]

Well, it's not skip buttons -- it's action buttons in lobby's games history -- if you minimize it by splitter then there aren't any performance problems on dialog moving:

[JayDi85]

There are multiple problems with too much paint calls. Example:

• wrong usage of opaque (miss setOpaque(true) for some non transparent components);
• wrong usage of layout validation;
• swing's components design (example: full redraw on inner frame moving);
• and other potential things (MageDialog.java contains some TODOs from 1f3fad65944f76c81f31cd7dc21381313f35a623).