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/dataset/dataset-setting/general-form.tsx

@@ -88,7 +88,7 @@ export function GeneralForm() {
         }}
       />
       <PermissionFormField></PermissionFormField>
-      <EmbeddingModelItem></EmbeddingModelItem>
+      <EmbeddingModelItem isEdit={true}></EmbeddingModelItem>
       <PageRankFormField></PageRankFormField>
 
       <TagItems></TagItems>