Compressed ajax_page_state['libraries'] can exist in both $request->request and $request->query simultaneously

N.B. this is mainly a problem because code like HtmlResponseAttachmentsProcessor, CssCollectionOptimizerLazy, and AjaxBasePageNegotiator all use code like

  $this->requestStack->getCurrentRequest()->get('ajax_page_state')

and Request::get() checks attributes, query, and request in that order.

It's quite critical issue. In my case: on any change in facet all assets are loaded second time on the page.

shouldn't the values be merged? or are we sure the GET data is always more up to date?