[BUG] ZenFlow Stage 3 with `full_warm_up_rounds=0` fails due to missing `complete_column_offset` attribute

[Antlera]

Describe the bug
When running Stage 3 with full_warm_up_rounds=0, the training fails with the following error:
AttributeError: 'Parameter' object has no attribute 'complete_column_offset'

This seems to be related to attribute propagation or initialization during parameter setup.
Thanks @tohtana for pointing this out in the PR #7793.

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To Reproduce
Steps to reproduce the behavior:

1. Configure Stage 3 with full_warm_up_rounds=0
2. Launch training as usual
3. Observe the AttributeError during backward or parameter initialization

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Expected behavior
Training should run normally without attribute errors, even when full_warm_up_rounds=0.

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Additional context
This likely needs a small fix in attribute initialization or propagation logic.
I’ll open a follow-up PR once the root cause is confirmed.