title: VS 2019 no intellisense and validation after ng cli update to version 10
body: <p>I've updated my .NET core 3.1+Angular 9.1 to Angular 10.0.2,
  steps I used:</p>
  <ol>
  <li>update Vs TypeScript to <a href="https://marketplace.visualstudio.com/items?itemName=TypeScriptTeam.typescript-395" rel="noreferrer">3.9.5</a></li>
  <li>run  <code>ng update @angular/core @angular/cli</code></li>
  </ol>
  <p>After that VS 2019 v 16.6.3 shows no intellisense and validation,project runs without problems.
  If I open the project in VS Code all work fine</p>
  <p>I've found the problem is just after I run  <code>ng update @angular/cli</code></p>
  <p>reverting project to 9.1 all works fine</p>
  <p>thanks</p>