fix(ENG-11471): remove divider for single category

[adefreitas]

Before

After

---

Summary by cubic

Only render the divider and category filter pills when there are multiple categories. This fixes ENG-11471 by removing the extra divider when the category filter is hidden.

^{Written for commit fc638f6. Summary will update automatically on new commits.}

[Copilot]

Pull request overview

This PR fixes a UI issue where a divider and category filter section were displayed even when only one category was available. The change conditionally renders these elements only when there are multiple categories to filter.

• Wraps the divider and category filter UI in a conditional block that checks if availableCategories.length > 1
• Removes unnecessary rendering of the filter UI when it serves no purpose (single category scenario)

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[joeStackOne]

LGTM