rustdoc: fix bump down typing search on Safari

src/librustdoc/html/templates/page.html

@@ -117,6 +117,7 @@ <h2 class="location"></h2>
                     </div> {#- -#}
                     <form class="search-form"> {#- -#}
                         <div class="search-container"> {#- -#}
+                            <span></span> {#- This empty span is a hacky fix for Safari - See #93184 -#}
                             <input {# -#}
                                 class="search-input" {# -#}
                                 name="search" {# -#}