style: reduce horizontal padding on fleet dashboards

Add px="lg" (24px) to all Container components:
- FleetDashboard
- FuelPurchasePage
- FuelStatsPage
- MaintenancePage
- FinancialReportsPage
- TrackingPage

Reduces left/right padding from default to 24px,
making better use of horizontal screen space.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

apps/edr-freight-web/backoffice/src/pages/fleet/TrackingPage.tsx

@@ -72,7 +72,7 @@ export function TrackingPage() {
   });
 
   return (
-    <Container size="xl" py="xl">
+    <Container size="xl" py="xl" px="lg">
       <Breadcrumbs items={[{ label: 'Fleet' }, { label: 'Vehicle Tracking' }]} />
 
       <Stack gap="xl">