feat: add ingestion pipeline children delimiters configs (#11979)

### What problem does this PR solve?

Add children delimiters for Ingestion pipeline config

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

web/src/pages/dataset/dataset-setting/configuration/naive.tsx

@@ -2,6 +2,7 @@ import {
   AutoKeywordsFormField,
   AutoQuestionsFormField,
 } from '@/components/auto-keywords-form-field';
+import { ChildrenDelimiterForm } from '@/components/children-delimiter-form';
 import { DelimiterFormField } from '@/components/delimiter-form-field';
 import { ExcelToHtmlFormField } from '@/components/excel-to-html-form-field';
 import { LayoutRecognizeFormField } from '@/components/layout-recognize-form-field';
@@ -21,6 +22,7 @@ export function NaiveConfiguration() {
         <MinerUOptionsFormField></MinerUOptionsFormField>
         <MaxTokenNumberFormField initialValue={512}></MaxTokenNumberFormField>
         <DelimiterFormField></DelimiterFormField>
+        <ChildrenDelimiterForm />
         <EnableTocToggle />
         <OverlappedPercent />
       </ConfigurationFormContainer>

web/src/pages/dataset/dataset-setting/form-schema.ts

@@ -24,6 +24,8 @@ export const formSchema = z
         layout_recognize: z.string(),
         chunk_token_num: z.number(),
         delimiter: z.string(),
+        enable_children: z.boolean(),
+        children_delimiter: z.string(),
         auto_keywords: z.number().optional(),
         auto_questions: z.number().optional(),
         html4excel: z.boolean(),

web/src/pages/dataset/dataset-setting/index.tsx

@@ -63,6 +63,8 @@ export default function DatasetSettings() {
         layout_recognize: DocumentType.DeepDOC,
         chunk_token_num: 512,
         delimiter: `\n`,
+        enable_children: false,
+        children_delimiter: `\n`,
         auto_keywords: 0,
         auto_questions: 0,
         html4excel: false,

web/src/pages/dataset/dataset-setting/saving-button.tsx

@@ -67,6 +67,13 @@ export function SavingButton() {
                 await saveKnowledgeConfiguration({
                   kb_id,
                   ...values,
+                  parser_config: {
+                    ...values.parser_config,
+                    // Unset children delimiter if this option is not enabled
+                    children_delimiter: values.parser_config.enable_children
+                      ? values.parser_config.children_delimiter
+                      : null,
+                  },
                 });
               })();
             }