refactor(types): rewrite type definitions to account for intrinsic attributes

types/DataTable/ToolbarMenuItem.d.ts

@@ -0,0 +1,13 @@
+/// <reference types="svelte" />
+
+export default class ToolbarMenuItem {
+  $$prop_def: {};
+
+  $$slot_def: {
+    default: {};
+  };
+
+  $on(eventname: "click", cb: (event: WindowEventMap["click"]) => void): () => void;
+  $on(eventname: "keydown", cb: (event: WindowEventMap["keydown"]) => void): () => void;
+  $on(eventname: string, cb: (event: Event) => void): () => void;
+}