fix: improve filter popover positioning and reliability across all views

src/components/ProductDescriptions.tsx

@@ -326,6 +326,7 @@ export function ProductDescriptions({ data, headers, asinColumnIndex, onEdit, ro
                         )}
                       </span>
                       <button
+                        id={`desc-filter-trigger-${col}`}
                         onClick={(e) => {
                           e.stopPropagation();
                           setOpenFilterCol(openFilterCol === col ? null : col);
@@ -347,6 +348,7 @@ export function ProductDescriptions({ data, headers, asinColumnIndex, onEdit, ro
 
                     {openFilterCol === col && (
                       <ColumnFilterPopover
+                        triggerId={`desc-filter-trigger-${col}`}
                         uniqueValues={getUniqueValues(col)}
                         selectedValues={columnFilters[col] || []}
                         onToggle={(val) => toggleColumnFilter(col, val)}