GetSystemStats doesn't return VectorRatePerWorker

[bersoare]

Description
When I retrieve stats using the following code block:

...
	sc := statsclient.NewStatsClient("/tmp/run/vpp/stats.sock")
	stats, err := core.ConnectStats(sc)
	if err != nil {
		panic(err)
	}

	fmt.Println("now calling GetSystemStats()")
	sysstats := api.SystemStats{}
	if err := stats.GetSystemStats(&sysstats); err != nil {
		panic(err)
	}

	fmt.Println("got", len(sysstats.VectorRatePerWorker), "entries")

	for i, stat := range sysstats.VectorRatePerWorker {
		fmt.Println(i, stat)
	}

i do not get the right values. here is the output of the program, and i had added a loop that finds the right values:

./mytest
my loop starts now, which show the right stats
per worker [0 26 197 21]
now calling GetSystemStats() <<<<
got 1 entries <<<<
0 0

How to reproduce
Steps to reproduce the behavior:
1- connect to the stats client
2- call GetSystemStats using a core.StatsConnection
3- check that the values returned don't match the expectation

Expected Behavior
return vector rate per worker - an array with 3 elements indexed by worker id

Screenshots/Logs
If applicable, add screenshots to help explain your problem.

Environment (please complete the following information)

Info	Example	Value
OS/arch	e.g. linux/amd64	linux amd/64
VPP version	v24.02-release	v26.06
GoVPP version	v0.8.0	v0.11.0

Additional context