Refactor widgets, add bloc dep

Clean up widget code and update a dependency:

- Remove redundant const qualifiers and tidy widget children in several skeleton/header widgets for consistent style.
- Add super.key to TaxFormsProgressOverview, TaxFormStatusBadge, and AccountCard constructors.
- Simplify AccountCard by consolidating its constructor into a single const declaration.
- Minor fixes: adjust Image.onError parameter, reformat CircleAvatar/Icon construction in edit_profile_page.
- Add bloc ^8.1.4 to staff/authentication pubspec.

These changes are stylistic and aim to improve consistency and constructor patterns across the codebase.

apps/mobile/packages/features/client/reports/lib/src/presentation/widgets/reports_page/metrics_grid_skeleton/metric_card_skeleton.dart

@@ -21,9 +21,9 @@ class MetricCardSkeleton extends StatelessWidget {
           // Icon + label row
           const Row(
             children: <Widget>[
-              const UiShimmerCircle(size: UiConstants.space6),
-              const SizedBox(width: UiConstants.space2),
-              const Expanded(
+              UiShimmerCircle(size: UiConstants.space6),
+              SizedBox(width: UiConstants.space2),
+              Expanded(
                 child: UiShimmerLine(width: 60, height: 10),
               ),
             ],