Compose where a declaration was sent: secrets, credentials, acceptances, the hub's peers, adoption, assignments and the bus's user list (issue 1945, B2, B6)

Each act that changed what a node runs now writes that node's compositions, and its wants follow by the assigner's
rules; a bus upgrade composes the bus's machines and answers the want the operator writes, since the assigner never
moves the bus (ADR 0539 clauses 5, 7 and 15). A node-engine may ask its own backup holder before a data module moves.

cmd/mesh-controller/issued.go

@@ -315,7 +315,10 @@ func secretIssued(ctx context.Context, args []string) error {
 				return err
 			})
 		},
-		send:       func(machines []string) error { return sendTo(ctx, open, machines) },
+		send: func(machines []string) error {
+			_, err := composeModules(ctx, open, machines)
+			return err
+		},
 		ofTheVault: filledTheNewWay,
 		vault:      theVault(ctx),
 	}