refactor(translator, executor): remove redundant bytes.Clone calls for improved performance

- Replaced all instances of `bytes.Clone` with direct references to enhance efficiency.
- Simplified payload handling across executors and translators by eliminating unnecessary data duplication.

internal/translator/openai/openai/chat-completions/openai_openai_request.go

@@ -3,7 +3,6 @@
 package chat_completions
 
 import (
-	"bytes"
 	"github.com/tidwall/sjson"
 )
 
@@ -25,7 +24,7 @@ func ConvertOpenAIRequestToOpenAI(modelName string, inputRawJSON []byte, _ bool)
 		// If there's an error, return the original JSON or handle the error appropriately.
 		// For now, we'll return the original, but in a real scenario, logging or a more robust error
 		// handling mechanism would be needed.
-		return bytes.Clone(inputRawJSON)
+		return inputRawJSON
 	}
 	return updatedJSON
 }