FEAT: NEW WORKFLOW ENGINE (#3160)

Co-authored-by: Joel <iamjoel007@gmail.com>
Co-authored-by: Yeuoly <admin@srmxy.cn>
Co-authored-by: JzoNg <jzongcode@gmail.com>
Co-authored-by: StyleZhang <jasonapring2015@outlook.com>
Co-authored-by: jyong <jyong@dify.ai>
Co-authored-by: nite-knite <nkCoding@gmail.com>
Co-authored-by: jyong <718720800@qq.com>

web/models/debug.ts

@@ -143,7 +143,7 @@ export type DatasetConfigs = {
   }
   top_k: number
   score_threshold_enabled: boolean
-  score_threshold: number
+  score_threshold?: number | null
   datasets: {
     datasets: {
       enabled: boolean