fix:weight_type missing when create document in dataset (#16503)

api/fields/dataset_fields.py

 }
 
 weighted_score_fields = {
+    "weight_type": fields.String,
     "keyword_setting": fields.Nested(keyword_setting_fields),
     "vector_setting": fields.Nested(vector_setting_fields),
 }

web/app/components/workflow/nodes/knowledge-retrieval/types.ts

   DataSet,
   MetadataInDoc,
   RerankingModeEnum,
+  WeightedScoreEnum,
 } from '@/models/datasets'
 
 export type MultipleRetrievalConfig = {
   }
   reranking_mode?: RerankingModeEnum
   weights?: {
+    weight_type: WeightedScoreEnum
     vector_setting: {
       vector_weight: number
       embedding_provider_name: string

web/models/debug.ts

 import type { AgentStrategy, ModelModeType, RETRIEVE_TYPE, ToolItem, TtsAutoPlay } from '@/types/app'
 import type {
   RerankingModeEnum,
+  WeightedScoreEnum,
 } from '@/models/datasets'
 import type { FileUpload } from '@/app/components/base/features/types'
 import type {
   }
   reranking_mode?: RerankingModeEnum
   weights?: {
+    weight_type: WeightedScoreEnum
     vector_setting: {
       vector_weight: number
       embedding_provider_name: string