recipes: pass lang prop to LanguageSelector for no-JS support

src/routes/[recipeLang=recipeLang]/+layout.svelte

@@ -87,11 +87,11 @@ function isActive(path) {
 	{/snippet}
 
 	{#snippet language_selector_mobile()}
-		<LanguageSelector />
+		<LanguageSelector lang={data.lang} />
 	{/snippet}
 
 	{#snippet language_selector_desktop()}
-		<LanguageSelector />
+		<LanguageSelector lang={data.lang} />
 	{/snippet}
 
 	{#snippet right_side()}