message: Button: fixed default min-height
diff: box-sizing: border-box;
  text-decoration: none;
  border: none;
  - min-height: var(--vkui--size_button_small_height--regular);
  + min-height: var(--vkui--size_button_small_height--compact);
  margin: 0;
  padding: 0;
  user-select: none;
  