feat: enchance prompt and code (#23633)

Co-authored-by: stream <stream@dify.ai>
Co-authored-by: Stream <1542763342@qq.com>
Co-authored-by: Stream <Stream_2@qq.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

web/i18n/zh-Hans/workflow.ts

@@ -988,6 +988,7 @@ const translation = {
       chatNode: '会话变量',
       systemNode: '系统变量',
     },
+    lastOutput: '上次输出',
     relations: {
       dependencies: '依赖',
       dependents: '被依赖',