fix(offline-notif) Try to connect immediately upon window focus

Summary: see title

Test Plan: manual

Reviewers: mark

Reviewed By: mark

Differential Revision: https://phab.nylas.com/D3901

internal_packages/notifications/lib/items/offline-notification.jsx

@@ -101,6 +101,7 @@ export default class OfflineNotification extends React.Component {
     // only attempt to retry if the window is in the foreground to avoid
     // the battery hit.
     if (!this.state.connected && !document.body.classList.contains('is-blurred')) {
+      Actions.retryDeltaConnection();
       this._updateInterval = setInterval(() => {
         Actions.retryDeltaConnection();
       }, CHECK_STATUS_INTERVAL);