reactivity of classes in FwbNavbarLink component fixed

change linkClasses in FwbNavbarLink to be computed rather than only evaluated on mount to resolve #373

Author: Sqrcz

src/components/FwbNavbar/FwbNavbarLink.vue

@@ -37,10 +37,10 @@ const defaultClasses = 'block py-2 pr-4 pl-3 rounded md:p-0'
 const componentName = computed(() => {
   return props.component !== 'a' ? resolveComponent(props.component) : 'a'
 })
-const linkClasses = twMerge(
+const linkClasses = computed(() => twMerge(
   defaultClasses,
   props.isActive ? currentPageClasses : defaultStateClasses,
-)
+))
 const handleClick = (event: Event) => {
   if (props.disabled) {
     return