fix(portforward): service start error not treated as critical

A service start error can happen if the service is started after the Wireguard VPN tunnel is up, but the tunnel does not work. The VPN is then internally restarted, causing the service start error, so it should not be treated as a critical error.

internal/portforward/loop.go

@@ -121,12 +121,6 @@ func (l *Loop) run(runCtx context.Context, runDone chan<- struct{},
 			// and if it failed to start.
 			updateResult <- err
 		}
-		if err != nil {
-			if runCtx.Err() == nil { // crashed but NOT stopped
-				runErrorCh <- fmt.Errorf("starting new service: %w", err)
-			}
-			return
-		}
 	}
 }