Add prefer-node-protocol ESLint rule (#21532)

* Add `unicorn/prefer-node-protocol`

* Fix `unicorn/prefer-node-protocol` ESLint errors

* Run `npm run format:fix`

* Add sandboxed-module sourceTransformers in mocha setups

Fix `no such file or directory, open 'node:fs'` in `sandboxed-module`

* Remove `node:` in the SandboxedModule requires

* Fix new linting errors with `node:`

GitOrigin-RevId: 68f6e31e2191fcff4cb8058dd0a6914c14f59926

server-ce/.eslintrc

@@ -4,6 +4,9 @@
     "standard",
     "prettier"
   ],
+  "plugins": [
+    "unicorn"
+  ],
   "parserOptions": {
     "ecmaVersion": 2020
   },
@@ -12,7 +15,8 @@
   },
   "rules": {
     // Do not allow importing of implicit dependencies.
-    "import/no-extraneous-dependencies": "error"
+    "import/no-extraneous-dependencies": "error",
+    "unicorn/prefer-node-protocol": "error"
   },
   "overrides": [
     // Extra rules for Cypress tests