perf(commands): skip no-op dispatch emissions

commands/dispatcher.ts

@@ -25,6 +25,9 @@ export function createCommandDispatcher(options: {
       const currentState = options.getState();
       const context: CommandContext = { state: currentState };
       const executedState = command.execute(context, payload);
+      if (executedState === currentState) {
+        return currentState;
+      }
       const nextState = shouldRecordHistory(commandId, currentState, executedState) ? recordHistory(currentState, executedState) : executedState;
       options.setState(nextState);
       return nextState;