Small fixes and workarounds, especially,
● A workaround for a bad regression in Qt 6.8.2 about app stylesheets.
● Another workaround for a weird bug in Qt 6.8 that may create gaps between SVG menu elements under special circumstances.
Also,
● Fixed the workaround for forced background colors of editable combo-boxes.
● Disable and re-enable blurring when windowOpacity switches between 0 and 1 respectively (especially with an auto-hiding lxqt-panel).
● Support regular expressions in Kvantum Manager's Application Themes.
● Added position animations to the explanatory notes of Kvantum Manager (for encouraging users to read them).