feat(dump): add date-range filter, sortable columns, and native date formatting to admin list

- Wires the backend from/to filter into the UI via sw-filter-panel with
  a hand-built date-filter config (no DAL entity needed — sw-filter-panel's
  only external dependency, filterService, persists through the generic
  user_config entity, not one for the filtered resource).
- Makes the datetime and sizeBytes columns sortable (ascending/descending)
  using the same Mixin.getByName('listing') core list pages use, which
  also persists sort state in the URL query string.
- Replaces the ad hoc `new Date(value).toLocaleString()` with
  Shopware.Utils.format.date, matching the existing fileSize formatting
  and respecting the admin's locale/timezone.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

CHANGELOG.md

@@ -20,3 +20,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   creation runs synchronously.
 - ACL-gated (`aeon_dump_manager.viewer`/`.creator`/`.deleter`), enforced both client-side and
   server-side.
+- Filter the dump list by a from/to date range, and sort the `datetime`/`sizeBytes` columns
+  ascending or descending. Dates are formatted with Shopware's locale/timezone-aware
+  `Shopware.Utils.format.date`, matching the existing `fileSize` formatting.