🔧 fix(xinference): update Document type to 'any' for flexibility

- Changed the type of `Document` in `XinRerankResponseDocument` from `string` to `any` to accommodate various data types.
- Updated the `RerankHandler` to handle `Document` as `any`, ensuring proper assignment based on its actual type.

These modifications enhance the handling of document data, allowing for greater versatility in response structures.

relay/channel/xinference/dto.go

@@ -1,7 +1,7 @@
 package xinference
 
 type XinRerankResponseDocument struct {
-	Document       string  `json:"document,omitempty"`
+	Document       any     `json:"document,omitempty"`
 	Index          int     `json:"index"`
 	RelevanceScore float64 `json:"relevance_score"`
 }