Please address the comments from this code review:

## Overall Comments
- In `getNodeByPrefix`, the read lock is acquired and immediately released before iterating the `nodes` map, which both defeats the purpose of the lock and risks a data race; keep the `RLock` held for the duration of the iteration (e.g., via `defer s.mutex.RUnlock()` inside the function).
- Within `getNodeByPrefix`, you can avoid an extra map lookup by ranging over both key and value (`for k, v := range s.nodes`) and returning `v` instead of indexing `s.nodes[k]` again.

## Individual Comments

### Comment 1
<location path="sensor/kubernetes/listener/resources/node_store.go" line_range="103-107" />
<code_context>
 	return s.nodes[nodeName]
 }

+func (s *nodeStoreImpl) getNodeByPrefix(prefix string) *nodeWrap {
+	s.mutex.RLock()
+	s.mutex.RUnlock()
+
+	for k := range s.nodes {
+		if strings.HasPrefix(k, prefix) {
+			return s.nodes[k]
</code_context>
<issue_to_address>
**issue (bug_risk):** The read lock is acquired and immediately released before iterating over the map, leaving the map access unprotected and racy.

`getNodeByPrefix` releases the read lock before iterating `s.nodes`, so the iteration and map lookups run without synchronization and can race with concurrent modifications. The lock should be held for the entire loop; if you keep early returns, use `defer s.mutex.RUnlock()` to ensure the lock is always released.
</issue_to_address>