fix: use the symbol registry for the Actor metadata Symbol
Fixes
@@ -77,7 +77,7 @@ interface ActorMetadata {
throttleDurationInMSecs: number;
}
-const metadataSymbol = Symbol();
+const metadataSymbol = Symbol.for('ic-agent-metadata');
/**
* An actor base class. An actor is an object containing only functions that will
