Inherited Unit does not inherit State correctly on python versions > 3.9

[pperanich]

I recently ran into an odd bug where an inherited unit does not inherit the base classes STATE but does inherit it's SETTINGS. Importantly, this bug is only present in Python versions greater than 3.9. See below for a minimal example.

import ezmsg.core as ez

class BaseSettings(ez.Settings):
    y: int = 10

class BaseState(ez.State):
    x: int = 9

class BaseUnit(ez.Unit):
    SETTINGS: BaseSettings
    STATE: BaseState

    async def initialize(self) -> None:
        ez.logger.info(f"{self.SETTINGS=}, {self.STATE=}")

class ChildUnit(BaseUnit):
    async def initialize(self) -> None:
        ez.logger.info("In child")
        ez.logger.info(f"{self.SETTINGS=}, {self.STATE=}")
        return await super().initialize()

if __name__ == "__main__":
    ez.run(ChildUnit())

Output on 3.9:

2024-07-15 13:18:26.014 - pid: 35744 - TaskThread - INFO - initialize: In child
2024-07-15 13:18:26.014 - pid: 35744 - TaskThread - INFO - initialize: self.SETTINGS=BaseSettings(y=10), self.STATE=BaseState(x=9)
2024-07-15 13:18:26.014 - pid: 35744 - TaskThread - INFO - initialize: self.SETTINGS=BaseSettings(y=10), self.STATE=BaseState(x=9)
2024-07-15 13:18:26.016 - pid: 35744 - MainThread - INFO - run: All processes exited normally

Output on 3.10:

2024-07-15 13:18:25.996 - pid: 35743 - TaskThread - INFO - initialize: In child
2024-07-15 13:18:25.996 - pid: 35743 - TaskThread - INFO - initialize: self.SETTINGS=BaseSettings(y=10), self.STATE=State()
2024-07-15 13:18:25.996 - pid: 35743 - TaskThread - INFO - initialize: self.SETTINGS=BaseSettings(y=10), self.STATE=State()
2024-07-15 13:18:25.997 - pid: 35743 - MainThread - INFO - run: All processes exited normally

[pperanich]

Fixed by #135