fix(site-runtime): seed republished overrides into Script Actors without firing scripts; alarms still evaluate (review 2026-10-21 01/SR-U1, decision M1)

HandleOverridesLoaded now sends children a site-local AttributeValueSeed
(stream still gets the AttributeValueChanged). ScriptActor updates its
snapshot, Conditional truth value and Expression last result (seed-only eval,
never fires); AlarmActor evaluates it as a normal change.

src/ZB.MOM.WW.ScadaBridge.SiteRuntime/Actors/AlarmActor.cs

@@ -246,6 +246,9 @@ public class AlarmActor : ReceiveActor
 
         // Handle attribute value changes
         Receive<AttributeValueChanged>(HandleAttributeValueChanged);
+        // Review 2026-10-21 01/SR-U1: an override seeded at instance start is evaluated like any
+        // change — an alarm whose condition already holds must raise.
+        Receive<Messages.AttributeValueSeed>(seed => HandleAttributeValueChanged(seed.Change));
 
         // Handle alarm execution completion (also releases the in-flight slot)
         Receive<AlarmExecutionCompleted>(HandleAlarmExecutionCompleted);