fix(api): inspectorate and Ofsted listing in payloads; Ofsted links that resolve (H4)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

backend/tests/test_supplementary_enrichment.py

@@ -33,7 +33,7 @@ def test_report_card_block_and_provider_url():
     assert block["report_card"]["rc_achievement"]["label"] == "Strong standard"
     assert "rc_safeguarding_met" not in block["report_card"]
     assert block["rc_safeguarding_met"] is True
-    assert block["ofsted_page_url"] == "https://reports.ofsted.gov.uk/provider/21/100140"
+    assert block["ofsted_page_url"] == "https://reports.ofsted.gov.uk/inspection-reports/find-inspection-report/provider/ELS/100140"
 
 
 def test_no_grade_is_carried_past_a_newer_inspection():