TablixJS - Server Mode Fixes Test

Test Scenarios

This page tests all server-side mode fixes:

1. ✅ Selection works on first load
2. ✅ Filter by values populated on first load
3. ✅ Only ONE request per action (no duplicates)
4. ✅ Filters persist when sorting/paginating
5. ✅ Search term included in requests
6. ✅ Table refreshes with sorted results
7. ✅ Sort value consistent (never undefined/null)