Expose draft updates to iOS bridge

apps/ios/TeleTuiIOS/Sources/TeleTuiIOSSmokeTests/main.swift

@@ -100,6 +100,16 @@ struct TeleTuiIOSSmokeTests {
         await viewModel.copyPayload(for: viewModel.messages[0])
         precondition(viewModel.copiedPayload == "Edited text")
 
+        viewModel.composeText = "Draft text"
+        await viewModel.saveDraft()
+        let draftEvents = try await bridge.pollEvents()
+        precondition(draftEvents.contains { event in
+            if case let .draftChanged(draft) = event {
+                return draft.chatId == chat.id && draft.text == "Draft text"
+            }
+            return false
+        })
+
         let photo = try await bridge.downloadPhoto(fileId: 100)
         let voice = try await bridge.downloadVoice(fileId: 200)
         precondition(photo.path == "/tmp/fake-photo-100.jpg")