Fixes: Added session variable types and modified configuration (#11269)

### What problem does this PR solve?

Fixes: Added session variable types and modified configuration

- Added more types of session variables
- Modified the embedding model switching logic in the knowledge base
configuration

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/pages/agent/gobal-variable-sheet/constant.ts

@@ -0,0 +1,73 @@
+import { FormFieldConfig, FormFieldType } from '@/components/dynamic-form';
+import { buildSelectOptions } from '@/utils/component-util';
+import { t } from 'i18next';
+// const TypesWithoutArray = Object.values(JsonSchemaDataType).filter(
+//   (item) => item !== JsonSchemaDataType.Array,
+// );
+// const TypesWithArray = [
+//   ...TypesWithoutArray,
+//   ...TypesWithoutArray.map((item) => `array<${item}>`),
+// ];
+
+export enum TypesWithArray {
+  String = 'string',
+  Number = 'number',
+  Boolean = 'boolean',
+  Object = 'object',
+  ArrayString = 'array<string>',
+  ArrayNumber = 'array<number>',
+  ArrayBoolean = 'array<boolean>',
+  ArrayObject = 'array<object>',
+}
+
+export const GlobalFormFields = [
+  {
+    label: t('flow.name'),
+    name: 'name',
+    placeholder: t('common.namePlaceholder'),
+    required: true,
+    validation: {
+      pattern: /^[a-zA-Z_]+$/,
+      message: t('flow.variableNameMessage'),
+    },
+    type: FormFieldType.Text,
+  },
+  {
+    label: t('flow.type'),
+    name: 'type',
+    placeholder: '',
+    required: true,
+    type: FormFieldType.Select,
+    options: buildSelectOptions(Object.values(TypesWithArray)),
+  },
+  {
+    label: t('flow.defaultValue'),
+    name: 'value',
+    placeholder: '',
+    type: FormFieldType.Textarea,
+  },
+  {
+    label: t('flow.description'),
+    name: 'description',
+    placeholder: t('flow.variableDescription'),
+    type: FormFieldType.Textarea,
+  },
+] as FormFieldConfig[];
+
+export const GlobalVariableFormDefaultValues = {
+  name: '',
+  type: TypesWithArray.String,
+  value: '',
+  description: '',
+};
+
+export const TypeMaps = {
+  [TypesWithArray.String]: FormFieldType.Textarea,
+  [TypesWithArray.Number]: FormFieldType.Number,
+  [TypesWithArray.Boolean]: FormFieldType.Checkbox,
+  [TypesWithArray.Object]: FormFieldType.Textarea,
+  [TypesWithArray.ArrayString]: FormFieldType.Textarea,
+  [TypesWithArray.ArrayNumber]: FormFieldType.Textarea,
+  [TypesWithArray.ArrayBoolean]: FormFieldType.Textarea,
+  [TypesWithArray.ArrayObject]: FormFieldType.Textarea,
+};