fix(Todoist Node): Make Section Name optional in Move Task operation

[ayatnkw]

Summary

When using a Todoist "Move a task" node, the section ID value is a required field in n8n, but this field is not required in the Todoist API. Leaving it blank gives a validation error: The value "" is not supported.

This PR fixes this by moving the SectionID under additional fields. It also adds ParentID as an additional field.

Related Linear tickets, Github issues, and Community forum posts

Related Github issue: https://github.com/n8n-io/n8n/issues/7478

Review / Merge checklist

• [ ] PR title and summary are descriptive. (conventions)
• [ ] Docs updated or follow-up ticket created.
• [ ] Tests included.
• [ ] PR Labeled with release/backport (if the PR is an urgent fix that needs to be backported)