message: cleanup ModalPageHeader broken shadow
diff: text-align: right;
  }
  -.ModalPageHeader__shadow {
  - pointer-events: none;
  - opacity: 0;
  - position: absolute;
  - top: 0;
  - height: 100%;
  - width: 100%;
  - z-index: 1;
  - transition: opacity 120ms ease-out;
  -}
  -
  -.ModalRoot--touched .ModalPageHeader__shadow {
  - transition: none;
  -}
  -
  -.ModalPageHeader--android .ModalPageHeader__shadow,
  -.ModalPageHeader--vkcom .ModalPageHeader__shadow {
  - box-shadow: 0 2px 2px 0 rgba(0, 0, 0, .06), 0 0 2px 0 rgba(0, 0, 0, .03);
  -}
  -
  -.ModalPageHeader__shadow::after {
  - content: '';
  - position: absolute;
  - top: 100%;
  - left: 0;
  - width: 100%;
  - height: 1px;
  - background: var(--separator_common);
  - transform-origin: center bottom;
  -}
  -
  -@media (min-resolution: 2dppx) {
  - .ModalPageHeader__shadow::after {
  - transform: scaleY(.5);
  - }
  -}
  -
  -@media (min-resolution: 3dppx) {
  - .ModalPageHeader__shadow::after {
  - transform: scaleY(.33);
  - }
  -}
  -
  .ModalPageHeader .PanelHeaderButton .Icon--dismiss_24 {
  color: var(--placeholder_icon_foreground_primary);
  }
  