bug: tcproute/httproute is missing old objects, resulting in a crash

[AlinsRan]

1. When triggering an update in the HTTPRoute, no OldObject was passed .

apisix-ingress-controller/pkg/providers/gateway/gateway_httproute.go

Lines 254 to 257 in 2182a48

	c.workqueue.Add(&types.Event{
	Type: types.EventUpdate,
	Object: key,
	})

2. During synchronization, type assertion will fail.

apisix-ingress-controller/pkg/providers/gateway/gateway_httproute.go

Line 165 in 2182a48

oldObj := ev.OldObject.(*gatewayv1beta1.HTTPRoute)

TCPRoute also has this issue

apisix-ingress-controller/pkg/providers/gateway/gateway_tcproute.go

Lines 248 to 251 in 2182a48

	c.workqueue.Add(&types.Event{
	Type: types.EventUpdate,
	Object: key,
	})