build: tsify worker/init (#24497)

filenames.auto.gni

@@ -327,7 +327,7 @@ auto_filenames = {
     "lib/renderer/ipc-renderer-internal.ts",
     "lib/renderer/remote/callbacks-registry.ts",
     "lib/renderer/webpack-provider.ts",
-    "lib/worker/init.js",
+    "lib/worker/init.ts",
     "package.json",
     "tsconfig.electron.json",
     "tsconfig.json",

lib/worker/init.ts

@@ -1,6 +1,5 @@
-'use strict';
+import * as path from 'path';
 
-const path = require('path');
 const Module = require('module');
 
 // We modified the original process.argv to let node.js load the