revert: "build: Migrate to Vite 🚀" (#6814)

Revert "build: Migrate to Vite 🚀 (#6713)"

This reverts commit e93bbc5776.

src/tests/appState.test.tsx

@@ -1,5 +1,4 @@
 import { queryByTestId, render, waitFor } from "./test-utils";
-
 import ExcalidrawApp from "../excalidraw-app";
 import { API } from "./helpers/api";
 import { getDefaultAppState } from "../appState";