[Blocker] Fix: Handle null nama_lengkap in admin PointsTab

## GitHub Update **Repository:** [MKWcorp/berkomunitas](https://github.com/MKWcorp/berkomunitas) **Author:** multimediadrw **Date:** 2/7/2026, 10:57:27 AM **Commit:** [`36a0673`](https://github.com/MKWcorp/berkomunitas/commit/36a0673c49fff84131a931de9be4ed8a8fa33b40) ### Commit Message Fix: Handle null nama_lengkap in admin PointsTab - Add optional chaining (?.) for nama_lengkap.toLowerCase() - Add null checks for string sorting to prevent 'Cannot read properties of null' error - Handle null/undefined values in member stats filtering and sorting Fixes runtime TypeError when members have null nama_lengkap field --- _This story was imported from historical commits._