fix: omit container param when None to avoid proxy 400 errors

custom_components/anthropic_custom/entity.py

@@ -687,7 +687,7 @@ class AnthropicBaseLLMEntity(Entity):
             max_tokens=options.get(CONF_MAX_TOKENS, DEFAULT[CONF_MAX_TOKENS]),
             system=system_prompt,
             stream=True,
-            container=container_id,
+            **({"container": container_id} if container_id else {}),
         )
 
         if not model.startswith(tuple(NON_ADAPTIVE_THINKING_MODELS)):
@@ -849,7 +849,7 @@ class AnthropicBaseLLMEntity(Entity):
             try:
                 stream = await client.messages.create(**model_args)
 
-                new_messages, model_args["container"] = _convert_content(
+                new_messages, _new_container = _convert_content(
                     [
                         content
                         async for content in chat_log.async_add_delta_content_stream(
@@ -862,6 +862,8 @@ class AnthropicBaseLLMEntity(Entity):
                         )
                     ]
                 )
+                if _new_container:
+                    model_args["container"] = _new_container
                 messages.extend(new_messages)
             except anthropic.AnthropicError as err:
                 raise HomeAssistantError(