fix(plan): always show notes for every record in a multi-record cell

Previously notes were hidden when a cell held 2-3 records (a density
choice). Show each record's note regardless of count — drop the
now-unused showNote prop on PlanRangeChips.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/admin/components/PlanGrid.tsx

@@ -620,7 +620,6 @@ export default function PlanGrid({
                                 c.category,
                                 catMap,
                               )}
-                              showNote={cellArr.length === 1}
                             />
                           </Box>
                         ))}