fix: Add missing ansible_check_mode condition in remaining_nodes.yml

[nikitamishagin]

Description

This change adds a missing check-mode guard to the readiness wait tasks. When the role was executed with Ansible check mode (-C), those tasks could enter an infinite loop because the cluster state is not actually changing and the readiness conditions could never be met.

What’s changed:

• The readiness wait logic is now skipped in check mode, preventing indefinite retries.
• Normal (non-check-mode) runs are unaffected and continue to wait for nodes as expected.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Small minor change not affecting the Ansible Role code (GitHub Actions Workflow, Documentation etc.)

How Has This Been Tested?

• Reproduced the hang by running the role with -C before the change.
• Verified that after the change, check-mode runs complete without hanging.
• Confirmed that regular runs still wait for readiness and succeed as before.

[MonolithProjects]

LGTM. Thanks