Convert most ts-ignore-calls to ts-expect-error (#93617)

Changes over to use ts-expect-error: https://devblogs.microsoft.com/typescript/announcing-typescript-3-9-beta/#ts-expect-error-comments

This revealed a number of places where we no longer need to supress errors

build/builtin/browser-main.js

@@ -6,7 +6,6 @@
 const fs = require('fs');
 const path = require('path');
 const os = require('os');
-// @ts-ignore review
 const { remote } = require('electron');
 const dialog = remote.dialog;