Unable to sync labels correctly

[whitewindmills]

What happened: I created a resource template to propagate to member clusters, but cannot delete any label which already exists via Karmada.

ConfigMap of Karmada control-plane

ConfigMap of Member clusters

What you expected to happen:

How to reproduce it (as minimally and precisely as possible):

1. Create any resource to propagate to member clusters.
2. Add any label to your resource via Karmada.
3. Delete the label via Karmada.

Anything else we need to know?: I found the propagated resource is missing the annotation resourcetemplate.karmada.io/managed-labels, and the annotation was mistakenly added to the work object.

Environment:

• Karmada version:
• kubectl-karmada or karmadactl version (the result of kubectl-karmada version or karmadactl version):
• Others:

[whitewindmills]

I've figured out the source of this problem, it was introduced by https://github.com/karmada-io/karmada/pull/4199.

/assign cc @XiShanYongYe-Chang @RainbowMango