[Web Apps] `web_app_setup_main_button` does not update colors

[heyqbnk]

Call of web_app_setup_main_button does not update Main Button background and text colors.

Steps to reproduce

1. Open Web Apps polygon bot (source code)
2. Open developers tools (F12)
3. Call Web Apps method:

   bridge.postEvent('web_app_setup_main_button', {
   text: 'Apply',
   text_color: '#00ff00',
   is_progress_visible: true,
   color: '#ff0000',
   is_visible: true,
   is_active: true
   });

4. See colors not specified during method calling

Expected behaviour

Telegram application applies colors specified in method.

[Ajaxy]

Done.