add loop check for tunnel nic

[dolibali]

Pull Request

• Make sure you have followed Kube-OVN Code Style.

What type of this PR

Examples of user facing changes:

• Features

Which issue(s) this PR fixes

Fixes #4705

[bobz965]

@oilbeater could you help review?

[zhangzujian]

// This method checks the status of the tunnel interface 
pkg/daemon/ovs_linux.go:722: File is not `gofumpt`-ed with `-extra` (gofumpt)
	
pkg/daemon/ovs_linux.go:729: File is not `gofumpt`-ed with `-extra` (gofumpt)
		//TODO: tunnelNic = "stt tunnel nic name"
pkg/daemon/ovs_linux.go:736: File is not `gofumpt`-ed with `-extra` (gofumpt)
	if err != nil || link == nil{
pkg/daemon/ovs_linux.go:738: File is not `gofumpt`-ed with `-extra` (gofumpt)
	} 
pkg/daemon/ovs_linux.go:7[45](https://github.com/kubeovn/kube-ovn/actions/runs/11852377974/job/33030447796?pr=4736#step:16:46): File is not `gofumpt`-ed with `-extra` (gofumpt)
	} 
pkg/util/const.go:136: File is not `gofumpt`-ed with `-extra` (gofumpt)
	VxlanNic = "vxlan_sys_[47](https://github.com/kubeovn/kube-ovn/actions/runs/11852377974/job/33030447796?pr=4736#step:16:48)89"