feature: set optional bit for rbf-coop close by default

feature/default_sets.go

@@ -95,4 +95,8 @@ var defaultSetDesc = setDesc{
 	lnwire.Bolt11BlindedPathsOptional: {
 		SetInvoice: {}, // I
 	},
+	lnwire.RbfCoopCloseOptionalStaging: {
+		SetInit:    {}, // I
+		SetNodeAnn: {}, // N
+	},
 }

feature/deps.go

@@ -85,6 +85,9 @@ var deps = depDesc{
 	lnwire.Bolt11BlindedPathsOptional: {
 		lnwire.RouteBlindingOptional: {},
 	},
+	lnwire.RbfCoopCloseOptionalStaging: {
+		lnwire.ShutdownAnySegwitOptional: {},
+	},
 }
 
 // ValidateDeps asserts that a feature vector sets all features and their