Summary: `setProcessState` does some adjusting to PATH. This was only ever done for Electron. This change moves that functionality to FlipperServerImpl which is the one what orchestrates. By doing this, flipper server also benefits from getting these adjustments. Reviewed By: antonk52 Differential Revision: D46836659 fbshipit-source-id: f98291d320cf9b7f3808223af8745c068b1318ce