0370d0f514
qtmultimedia: drop qtdeclarative dep (its staged QtQuick scenegraph config header made QT_CONFIG(quick_sprite) divide by zero for consumers); keep qtshadertools (video-frame shaders need qt_internal_add_shaders). Builds libQt6Multimedia (API-only). konsole: drop the 439-line optional-multimedia workaround patch and depend on qtmultimedia + qt5compat + qtbase-printsupport directly — port the modules, don't work around them.