fix crash when HMS error fires before device is registered (X2D)

[WrathPak]

ran into this on my X2D. when it throws an HMS code right as HA is connecting, _update_printer_error blows up because the device isn't in the registry yet so hadevice is None:

File "/config/custom_components/bambu_lab/coordinator.py", line 748, in _update_printer_error
    "device_id": hadevice.id,
                 ^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'id'

_update_print_error has the same hadevice.id pattern so i added a guard there too. if the device lookup comes back None i just log + return and let the next cycle handle it once it's registered. error's gone for me after this.

timing thing mostly, my X2D had a pending HMS code (0300_2E00_...) on startup so it hit every reconnect. didn't dig into why the X2D specifically registers later than the error arrives but the None guard seemed like the safe fix regardless of model.

lmk if you'd rather handle it differently but wanted to take a stab at helping :)

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