Reverts setting mousedown on capture. This is related to https://github.com/Kitware/vtk-js/pull/2462 in that preventDefault is no longer invoked by default, so this change (which didn't fix anything anyways) can be reverted.
TODO: update the vtk.js version required, as to avoid mousedown breakage.
Reverts setting mousedown on capture. This is related to https://github.com/Kitware/vtk-js/pull/2462 in that preventDefault is no longer invoked by default, so this change (which didn't fix anything anyways) can be reverted.
TODO: update the vtk.js version required, as to avoid mousedown breakage.