Fix UI tests by replacing jest with vitest

ui/vite.config.js

@@ -1,3 +1,6 @@
+/// <reference types="vitest" />
+/// <reference types="vite/client" />
+
 import { defineConfig } from 'vite'
 import svgr from 'vite-plugin-svgr'
 import react from '@vitejs/plugin-react'
@@ -8,4 +11,12 @@ export default defineConfig({
   server: {
     port: 1234,
   },
+  esbuild: {
+    logOverride: { 'this-is-undefined-in-esm': 'silent' },
+  },
+  test: {
+    globals: true,
+    environment: 'jsdom',
+    setupFiles: './testing/setupTests.ts',
+  },
 })