don't focus the search input while fetching

When triggering a search the input field would receive focus again when
the spinner page shows. On mobile this is annoying, as the keyboard pops
up again for no reason. We now only autofocus on the start (aka. home)
page.

Author: koffeinfrei

www/app/views/home/show.html.slim

@@ -1,3 +1,3 @@
-= render 'shared/search_box'
+= render 'shared/search_box', autofocus: true
 
 = render 'shared/random_quote'

www/app/views/shared/_search_box.html.slim

@@ -1,4 +1,4 @@
-/# locals: (query: nil)
+/# locals: (query: nil, autofocus: false)
 
 section.box.padded[
     data-controller="search-autocomplete"
@@ -14,7 +14,7 @@ section.box.padded[
       value=query
       data-search-autocomplete-target="input"
       data-action="click->search-autocomplete#reopen"
-      autofocus=true
+      autofocus=autofocus
     ]
 
     dialog data-dialog-target='dialog'