Clustered regions don't open popup when selected from search results

[comnam90]

Bug Description

When selecting a clustered region (regions grouped together in a map cluster bubble) from search results, the map pans to the region but the popup does not open. Non-clustered regions work correctly.

Steps to Reproduce

1. Open the map at https://vdcmap.bcthomas.com
2. In the search box, type "East US 2" (or any other clustered region)
3. Click on the search result
4. Expected: Map pans to region AND popup opens showing region details
5. Actual: Map pans to region but popup does NOT open

Expected Behavior

All regions should open their popup when selected from search results, regardless of whether they're in a cluster or standalone.

Actual Behavior

• ✅ Non-clustered regions (e.g., "Canada Central"): Popup opens correctly
• ❌ Clustered regions (e.g., "East US 2", "US East 1"): Popup does not open

Test Evidence

Playwright test results confirm this behavior:

• Test with "East US 2" (clustered): FAILS - popup not visible
• Test with "Canada Central" (non-clustered): PASSES - popup appears

Technical Context

• Leaflet.js map with marker clustering
• Search functionality in layouts/index.html
• Regions that are close together are grouped into numbered cluster bubbles on the map
• Direct marker clicks work correctly (when you can reach the individual marker)
• Only search-triggered popup opening fails for clustered regions

Affected Code

Likely in the search result click handler around line 600-700 in layouts/index.html

Test Coverage

Test case added in tests/ui.spec.ts:

• Line ~75: Failing test marked as .fixme() demonstrating the bug
• Line ~93: Passing control test with non-clustered region