message: fix(iOS): set default `--safe-area-inset-top` only for iOS
diff: /**
  * Android
  */
  -
  -@supports not (padding-top: env(safe-area-inset-top)) {
  - .PanelHeader--android,
  - .PanelHeader--vkcom {
  - --safe-area-inset-top: 0px;
  - }
  -}
  -
  .PanelHeader--android ~ .FixedLayout--top,
  .PanelHeader--android ~ * .FixedLayout--top:not(.PanelHeader__fixed) {
  top: calc(var(--panelheader_height_android) + var(--safe-area-inset-top));
  