patch: remove usage of llm, chat model __call__ (#20788)

- `llm(prompt)` -> `llm.invoke(prompt)`
- `llm(prompt=prompt` -> `llm.invoke(prompt)` (same with `messages=`)
- `llm(prompt, callbacks=callbacks)` -> `llm.invoke(prompt,
config={"callbacks": callbacks})`
- `llm(prompt, **kwargs)` -> `llm.invoke(prompt, **kwargs)`

libs/community/langchain_community/llms/azureml_endpoint.py

@@ -528,7 +528,7 @@ class AzureMLOnlineEndpoint(BaseLLM, AzureMLBaseEndpoint):
             The string generated by the model.
         Example:
             .. code-block:: python
-                response = azureml_model("Tell me a joke.")
+                response = azureml_model.invoke("Tell me a joke.")
         """
         _model_kwargs = self.model_kwargs or {}
         _model_kwargs.update(kwargs)