Go: add API mode check in file system command (#16022)

### What problem does this PR solve?

As title.

### Type of change

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

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

cmd/ragflow_cli.go

@@ -69,7 +69,7 @@ func main() {
 			os.Exit(1)
 		}
 	} else {
-		if err = client.NewRun(); err != nil {
+		if err = client.Run(); err != nil {
 			fmt.Printf("CLI error: %v\n", err)
 			os.Exit(1)
 		}