refactor(mesh-phase4): retire EfAlarmConditionStateStore + drop dead ScriptedAlarmState table (Task 9)

Scripted-alarm condition state lives in LocalDb (Phase 4); the ConfigDb-backed
Ef store + ScriptedAlarmState table are now dead. Removes the test-harness Ef
fallback (a DB-backed node with no store now skips the alarm host), deletes the
store + entity + model config, and drops the table via migration.

Claude-Session: https://claude.ai/code/session_01GASWkNEi68FSCtvr6rLoEW

tests/Core/ZB.MOM.WW.OtOpcUa.Configuration.Tests/SchemaComplianceTests.cs

@@ -36,8 +36,10 @@ public sealed class SchemaComplianceTests
             "DriverHostStatus",
             "DriverInstanceResilienceStatus",
             "LdapGroupRoleMapping",
-            // v3 dropped the orphaned EquipmentImportBatch / EquipmentImportRow tables
-            "Script", "ScriptedAlarm", "ScriptedAlarmState",
+            // v3 dropped the orphaned EquipmentImportBatch / EquipmentImportRow tables.
+            // ScriptedAlarmState was dropped in per-cluster mesh Phase 4 (Task 9) — scripted-alarm
+            // condition state moved to the replicated LocalDb store.
+            "Script", "ScriptedAlarm",
             // v2 deploy-model tables (Phase 1 of Akka + fused-hosting alignment)
             "Deployment", "NodeDeploymentState", "ConfigEdit", "DataProtectionKeys",
         };