fix: sctx cause request ctx canceled during graceful shutdown (#3097)

app.go

@@ -109,7 +109,7 @@ func (a *App) Run() error {
 		wg.Add(1)
 		eg.Go(func() error {
 			wg.Done() // here is to ensure server start has begun running before register, so defer is not needed
-			return srv.Start(sctx)
+			return srv.Start(NewContext(a.opts.ctx, a))
 		})
 	}
 	wg.Wait()