Revert "feat(theme-default): remove ari-hidden on title and use an em…

…pty alt on brand image if not specified"

This reverts commit 4250903.

themes/theme-default/src/client/components/NavbarBrand.vue

@@ -24,7 +24,14 @@ const navbarBrandLogo = computed(() => {
   }
   return themeLocale.value.logo
 })
-const navbarBrandLogoAlt = computed(() => themeLocale.value.logoAlt ?? '')
+const navbarBrandLogoAlt = computed(
+  () => themeLocale.value.logoAlt ?? navbarBrandTitle.value,
+)
+const navBarLogoAltMatchesTitle = computed(
+  () =>
+    navbarBrandTitle.value.toLocaleUpperCase().trim() ===
+    navbarBrandLogoAlt.value.toLocaleUpperCase().trim(),
+)
 const NavbarBrandLogo: FunctionalComponent = () => {
   if (!navbarBrandLogo.value) return null
   const img = h('img', {
@@ -49,6 +56,7 @@ const NavbarBrandLogo: FunctionalComponent = () => {
       v-if="navbarBrandTitle"
       class="site-name"
       :class="{ 'can-hide': navbarBrandLogo }"
+      :aria-hidden="navBarLogoAltMatchesTitle"
     >
       {{ navbarBrandTitle }}
     </span>