title: Error:invalid_client - The OAuth client was deleted even after having undeleted the API project
body: <p>I am currently facing an issue with my Google API project. This project was deleted yesterday (I don't know who did it...) so I tried to undelete it. After this I still get the same error message:</p>
  
  <pre><code>Error: invalid_client
  The OAuth client was deleted.
  
  Request detail
  cookie_policy_enforce=false
  scope=https://www.googleapis.com/auth/userinfo.profile https://www.googleapis.com/auth/userinfo.email https://www.google.com/m8/feeds/ https://www.googleapis.com/auth/calendar https://www.googleapis.com/auth/drive https://www.googleapis.com/auth/tasks
  response_type=code
  access_type=offline
  redirect_uri=https://domain.com/googleConnect
  client_id=projectID.apps.googleusercontent.com
  </code></pre>
  
  <p>What can I do to completely revive this API project and fix this issue?
  Thanks for your help!</p>