RUM-1978 Initial fix

DatadogRUM/Sources/RUMMonitor/Monitor.swift

@@ -221,7 +221,7 @@ extension Monitor: RUMMonitorProtocol {
         process(
             command: RUMStartViewCommand(
                 time: dateProvider.now,
-                identity: viewController,
+                identity: viewController.asRUMViewIdentity(),
                 name: name,
                 path: nil,
                 attributes: attributes

DatadogRUM/Sources/RUMMonitor/Scopes/Utils/RUMViewIdentity.swift

@@ -66,7 +66,7 @@ extension String: RUMViewIdentifiable {
 // MARK: - `RUMViewIdentity`
 
 /// Manages the `RUMViewIdentifiable` by using either reference or value semantic.
-internal struct RUMViewIdentity {
+internal struct RUMViewIdentity: RUMViewIdentifiable {
     private weak var object: AnyObject?
     private let value: Any?
 
@@ -104,4 +104,20 @@ internal struct RUMViewIdentity {
     var identifiable: RUMViewIdentifiable? {
         return (object as? RUMViewIdentifiable) ?? (value as? RUMViewIdentifiable)
     }
+
+    // MARK: - RUMViewIdentifiable
+
+    func asRUMViewIdentity() -> RUMViewIdentity {
+        self
+    }
+
+    var defaultViewPath: String {
+        if let selfObject = object as? RUMViewIdentifiable {
+            return selfObject.defaultViewPath
+        } else if let selfValue = value as? RUMViewIdentifiable {
+            return selfValue.defaultViewPath
+        } else {
+            return ""
+        }
+    }
 }