graphdb: pass context to IsPublicNode

graph/db/kv_store.go

@@ -4103,8 +4103,8 @@ func (c *KVStore) FetchChannelEdgesByID(_ context.Context,
 // IsPublicNode is a helper method that determines whether the node with the
 // given public key is seen as a public node in the graph from the graph's
 // source node's point of view.
-func (c *KVStore) IsPublicNode(v lnwire.GossipVersion, pubKey [33]byte) (bool,
-	error) {
+func (c *KVStore) IsPublicNode(_ context.Context, v lnwire.GossipVersion,
+	pubKey [33]byte) (bool, error) {
 
 	if v != lnwire.GossipVersion1 {
 		return false, ErrVersionNotSupportedForKVDB