refactor: make invoke public again

integrations/amazon_bedrock/src/haystack_integrations/components/generators/amazon_bedrock/generator.py

@@ -167,7 +167,7 @@ def _ensure_token_limit(self, prompt: Union[str, List[Dict[str, str]]]) -> Union
             )
         return str(resize_info["resized_prompt"])
 
-    def _invoke(self, *args, **kwargs):
+    def invoke(self, *args, **kwargs):
         """
         Invokes the model with the given prompt.
 
@@ -232,7 +232,7 @@ def run(self, prompt: str, generation_kwargs: Optional[Dict[str, Any]] = None):
         :raises ValueError: If the prompt is empty or None.
         :raises AmazonBedrockInferenceError: If the model cannot be invoked.
         """
-        return {"replies": self._invoke(prompt=prompt, **(generation_kwargs or {}))}
+        return {"replies": self.invoke(prompt=prompt, **(generation_kwargs or {}))}
 
     @classmethod
     def get_model_adapter(cls, model: str) -> Optional[Type[BedrockModelAdapter]]: