Add beforeRegisterVueAppNodeDefs hook (#709)

* Add beforeRegisterVueAppNodeDefs hook

* Remove min-char constraint on node library search

src/components/sidebar/tabs/NodeLibrarySidebarTab.vue

@@ -129,7 +129,9 @@ const filteredRoot = computed<TreeNode | null>(() => {
 const filters: Ref<Array<SearchFilter & { filter: FilterAndValue<string> }>> =
   ref([])
 const handleSearch = (query: string) => {
-  if (query.length < 3 && !filters.value.length) {
+  // Don't apply a min length filter because it does not make sense in
+  // multi-byte languages like Chinese, Japanese, Korean, etc.
+  if (query.length === 0 && !filters.value.length) {
     filteredNodeDefs.value = []
     expandedKeys.value = {}
     return