feat(QScrollArea): (backport from Qv2) prevent scrolling on mouseDown over the thumb zone #12018 (#12021)
feat(QScrollArea): (backport from Qv2) prevent scrolling on mouseDown over the thumb zone #12018 (#12021)

#12018
pdanpdan/quasar,pdanpdan/quasar,pdanpdan/quasar,pdanpdan/quasar