message: FormField: fix hover and active states
  mostly for plain selects
diff: box-sizing: border-box;
  z-index: 1;
  transform-origin: left top;
  + border: var(--thin-border) solid transparent;
  }
  .FormField--default .FormField__border {
  - border: var(--thin-border) solid
  - var(--field_border, var(--vkui--color_field_border_alpha));
  - background: var(--field_background, var(--vkui--color_field_background));
  + border-color: var(--field_border, var(--vkui--color_field_border_alpha));
  + background-color: var(
  + --field_background,
  + var(--vkui--color_field_background)
  + );
  }
  .FormItem--error .FormField__border {
  );
  }
  -.FormField--default:focus-within .FormField__border,
  -.FormField--default *:focus ~ .FormField__border,
  -.ChipsInput--focused .FormField--default .FormField__border {
  +.FormField:focus-within .FormField__border,
  +.FormField *:focus ~ .FormField__border,
  +.ChipsInput--focused .FormField__border {
  border-color: var(--accent, var(--vkui--color_stroke_accent));
  }
  