fix some type hints

[benderl]

No description provided.

[Copilot]

Pull request overview

This PR corrects several Python type hints to better reflect actual runtime behavior in the MQTT consumer module and shared component state models.

Changes:

• Update the MQTT consumer update() callback annotation to return ConsumerState (matching what it actually returns and what ConfigurableConsumer expects).
• Mark the MQTT consumer config configuration parameter as Optional[...] since it defaults to None.
• Fix IoState constructor annotations to use Optional[Dict[...]] for parameters that default to None.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
packages/modules/consumers/generic/mqtt/consumer.py	Adjusts update() return type to ConsumerState to match the constructed return value.
packages/modules/consumers/generic/mqtt/config.py	Makes configuration explicitly optional when defaulting to None.
packages/modules/common/component_state.py	Corrects IoState parameter annotations to reflect nullable dict inputs.

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