Skip source map explorer for now

There seems to be some incompatibility, one we can return to when we're
focussed on bundle size.

package.json

@@ -69,7 +69,6 @@
     "pptr-testing-library": "^0.7.0",
     "prettier": "2.3.2",
     "puppeteer": "13.4.0",
-    "source-map-explorer": "^2.5.3",
     "typescript": "^5.4.2",
     "vite-plugin-svgr": "^4.2.0",
     "vitest": "^1.3.1"
@@ -79,9 +78,7 @@
     "npm": ">=8.0"
   },
   "scripts": {
-    "bundle-size-explorer": "source-map-explorer 'build/static/js/*.js'",
-    "bundle-size-report": "source-map-explorer 'build/static/js/*.js' --html reports/bundle-size.html",
-    "ci": "npm run typecheck && npm run test && npm run build && npm run bundle-size-report",
+    "ci": "npm run typecheck && npm run test && npm run build",
     "postinstall": "npm run theme",
     "start": "vite dev",
     "build": "vite build",

vite.config.ts

@@ -29,6 +29,7 @@ export default defineConfig(({ mode }) => {
     base: process.env.BASE_URL ?? "/",
     build: {
       outDir: "build",
+      sourcemap: true,
     },
     worker: {
       format: "es",