Better notification messaging

Summary:
'Failed to start connection server' is a bit misleading. 'server-error' is used for both server and client errors.
Changelog: Better notification messaging

Reviewed By: aigoncharov

Differential Revision: D34269045

fbshipit-source-id: f51a28fc0e9ba394b464e5bfca4d0e497f740b1b

desktop/flipper-ui-core/src/dispatcher/flipperServer.tsx

@@ -46,7 +46,7 @@ export function connectFlipperServerToStore(
 
   server.on('server-error', (err) => {
     notification.error({
-      message: 'Failed to start connection server',
+      message: 'Connection error',
       description:
         err.code === 'EADDRINUSE' ? (
           <>
@@ -62,7 +62,7 @@ export function connectFlipperServerToStore(
             {'' + err}
           </>
         ) : (
-          <>Failed to start Flipper server: {err.message ?? err}</>
+          <>{err.message ?? err}</>
         ),
       duration: null,
     });