fix: persist deliveryContext on last-route updates

Co-authored-by: Adam Holt <mail@adamholt.co.nz>

src/imessage/monitor.updates-last-route-chat-id-direct-messages.test.ts

@@ -121,8 +121,10 @@ describe("monitorIMessageProvider", () => {
 
     expect(updateLastRouteMock).toHaveBeenCalledWith(
       expect.objectContaining({
-        channel: "imessage",
-        to: "+15550004444",
+        deliveryContext: expect.objectContaining({
+          channel: "imessage",
+          to: "+15550004444",
+        }),
       }),
     );
   });

src/imessage/monitor/monitor-provider.ts

@@ -453,9 +453,11 @@ export async function monitorIMessageProvider(opts: MonitorIMessageOpts = {}): P
         await updateLastRoute({
           storePath,
           sessionKey: route.mainSessionKey,
-          channel: "imessage",
-          to,
-          accountId: route.accountId,
+          deliveryContext: {
+            channel: "imessage",
+            to,
+            accountId: route.accountId,
+          },
         });
       }
     }