Fix remaining typescript issues, enable tsc (#32840)

Fixes 79 typescript errors. Discovered at least two bugs in
`notifications.ts`, and I'm pretty sure this feature was at least
partially broken and may still be, I don't really know how to test it.

After this, only like ~10 typescript errors remain in the codebase but
those are harder to solve.

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

tsconfig.json

@@ -7,7 +7,8 @@
   ],
   "compilerOptions": {
     "target": "es2020",
-    "module": "nodenext",
+    "module": "esnext",
+    "moduleResolution": "bundler",
     "lib": ["dom", "dom.iterable", "dom.asynciterable", "esnext"],
     "allowImportingTsExtensions": true,
     "allowJs": true,