fix(processor): validate expected_cycles after rounding (fixes #2741)

[erenyegit]

Made-with: Cursor

Describe your changes

Checklist before requesting a review

• Repo forked and branch created from next according to naming convention.
• Commit messages and codestyle follow conventions.
• Commits are signed.
• Relevant issues are linked in the PR description.
• Tests added for new functionality.
• Documentation/comments updated according to changes.
• Updated `CHANGELOG.md'

Fixes #2741

[github-actions]

Automated check (CONTRIBUTING.md)

Findings:

• Ensure issue expected_cycles validation happens before rounding, should be after #2741 is assigned to the PR author.
• Add a short Rationale explaining why the change is needed.

Recommendations:

• Consider adding a Test plan or clear review steps.

Next steps:

• Ensure issue expected_cycles validation happens before rounding, should be after #2741 is assigned to you.
• See CONTRIBUTING.md for expectations.
• If this is a false positive, comment: /quality-review.