Update OpenAPI file return struct (#486)

* completionBatchingRequestSupport

* lint fix

* fix Run test fail

* fix TestClientReturnsRequestBuilderErrors fail

* fix Codecov  check

* ignore TestClientReturnsRequestBuilderErrors lint

* fix lint again

* lint again*2

* replace checkPromptType  implementation

* remove nil check

* update file return struct

---------

Co-authored-by: W <825708370@qq.com>

files_api_test.go

@@ -64,7 +64,6 @@ func handleCreateFile(w http.ResponseWriter, r *http.Request) {
 		Purpose:   purpose,
 		CreatedAt: time.Now().Unix(),
 		Object:    "test-objecct",
-		Owner:     "test-owner",
 	}
 
 	resBytes, _ = json.Marshal(fileReq)