fix: correct loading order for Checklist ContentNode

[shruthikha]

Fix Checklist ContentNode loading behaviour

This PR fixes an issue where checklist items and the "Edit" label were rendered before the skeleton loader.

Problem

ChecklistDisplaySelectedItems was always rendered, even when itemsLoaded was false, causing incorrect UI order.

Solution

Updated conditional rendering logic to:

• Show skeleton loader while loading
• Show "Edit" label when no items are selected
• Show selected items otherwise

Result

Correct rendering order:

1. Skeleton loader
2. Edit label OR selected items

Closes #9462

[shruthikha]

Heyyy! I've submitted a fix for this issue.

The problem was that checklist items were rendering even when itemsLoaded was false, causing incorrect UI order. I've updated the conditional rendering to ensure the skeleton loader appears first, followed by either the "Edit" label or selected items.

Let me know if any changes are needed