fix: 🐛 move tabindex=0 to <label>

Signed-off-by: WaitSpring <me@waitspring.com>

templates/Drawer.mustache

@@ -9,8 +9,7 @@
 		class="mw-checkbox-hack-checkbox"
 		role="button"
 		aria-labelledby="citizen-drawer__buttonCheckbox"
-		aria-haspopup="true"
-		tabindex="0">
+		aria-haspopup="true">
 	{{! ID needed for a11y and checkbox hack }}
 	<aside id="citizen-drawer__card" class="citizen-drawer__card mw-checkbox-hack-target">
 		<header class="citizen-drawer__header">

templates/Drawer__button.mustache

@@ -12,7 +12,8 @@
 		class="mw-checkbox-hack-button citizen-header__buttonCheckbox"
 		for="citizen-drawer__checkbox"
 		title="{{msg-citizen-drawer-toggle}}"
-		aria-hidden="true">
+		aria-hidden="true"
+		tabindex="0">
 		<span>{{msg-citizen-drawer-toggle}}</span>
 	</label>
 </div>

templates/Search.mustache

@@ -13,8 +13,7 @@
 		class="mw-checkbox-hack-checkbox"
 		role="button"
 		aria-labelledby="citizen-search__buttonCheckbox"
-		aria-haspopup="true"
-		tabindex="0">
+		aria-haspopup="true">
 	<div role="search" class="citizen-search-box citizen-search__card mw-checkbox-hack-target">
 		<span class="citizen-search__icon citizen-ui-icon mw-ui-icon-wikimedia-search"></span>
 		<form action="{{form-action}}" id="searchform" autocomplete="off">

templates/Search__button.mustache

@@ -13,7 +13,8 @@
 		class="mw-checkbox-hack-button citizen-header__buttonCheckbox" 
 		for="citizen-search__checkbox"
 		title="{{msg-citizen-search-toggle}} {{msg-citizen-search-toggle-shortcut}}"
-		aria-hidden="true">
+		aria-hidden="true"
+		tabindex="0">
 		<span>{{msg-citizen-search-toggle}}</span>
 	</label>
 </div>