chore: change enum list failure log to a warning

Behavior is unchanged, just how it is reported.

config/mutations.go

@@ -155,6 +155,13 @@ func EnumLists(ts *guts.Typescript) {
 	})
 
 	for name, node := range addNodes {
+		if n, ok := ts.Node(name); ok {
+			slog.Warn(fmt.Sprintf("enum list %s cannot be added, an existing declaration with that name exists. "+
+				"To generate this enum list, the name collision must be resolved. ", name),
+				slog.String("existing", fmt.Sprintf("%s", n)))
+			continue
+		}
+
 		err := ts.SetNode(name, node)
 		if err != nil {
 			slog.Error(fmt.Sprintf("failed to add enum list %s: %v", name, err))

convert.go

@@ -280,6 +280,14 @@ func (ts *Typescript) ReplaceNode(key string, node bindings.Node) {
 	}
 }
 
+func (ts *Typescript) Node(key string) (bindings.Node, bool) {
+	v, ok := ts.typescriptNodes[key]
+	if !ok {
+		return nil, false
+	}
+	return v.Node, true
+}
+
 func (ts *Typescript) SetNode(key string, node bindings.Node) error {
 	if _, ok := ts.typescriptNodes[key]; ok {
 		return fmt.Errorf("node %q already exists", key)