test(fusion_claims,fusion_tasks): fix clone-test failures (future dates + seed-aware asserts)

Real install verified on the Westin clone; these were test-only bugs:
- Task-create tests hardcoded scheduled_date 2026-06-03, now in the past, which
  the base _check_no_overlap rejects ('Cannot schedule tasks in the past'). Use
  future dates (tz test pins a future July date so Toronto stays EDT for the
  9:00->13:00 UTC assertion).
- Service-rate resolver tests created rows with seeded codes (callout_standard_normal,
  per_km) -> UNIQUE(code) violation post-install. Assert against the seed instead.

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

fusion_claims/tests/test_service_booking.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-from datetime import date
+from datetime import date, timedelta
 from odoo.tests.common import TransactionCase, tagged
 
 
@@ -24,7 +24,7 @@ class TestServiceBooking(TransactionCase):
         t = self.Task.create({
             'task_type': 'repair',
             'technician_id': self.tech.id,
-            'scheduled_date': date(2026, 6, 3),
+            'scheduled_date': date.today() + timedelta(days=7),
             'description': 'Test repair',
             'is_in_store': True,
         })
@@ -63,7 +63,7 @@ class TestServiceBooking(TransactionCase):
                          'street': '88 Bloor St E', 'city': 'Toronto'},
             'category': 'standard', 'timing': 'normal', 'in_shop': False,
             'device': 'scooter', 'issue': "won't power on",
-            'date': '2026-06-03', 'time_start': 9.0, 'duration_hr': 1.0,
+            'date': (date.today() + timedelta(days=7)).strftime('%Y-%m-%d'), 'time_start': 9.0, 'duration_hr': 1.0,
             'technician_id': self.tech.id, 'description': 'check battery',
         }
         res = self.Task.action_book_from_wizard(payload)