chore: remove ISubscription type casting on RoomOpenerEmbedded (#35295)

apps/meteor/client/lib/utils/mapSubscriptionFromApi.ts

+import type { ISubscription, Serialized } from '@rocket.chat/core-typings';
+
+export const mapSubscriptionFromApi = ({
+	ts,
+	lr,
+	ls,
+	_updatedAt,
+	oldRoomKeys,
+	suggestedOldRoomKeys,
+	...subscription
+}: Serialized<ISubscription>): ISubscription => ({
+	...subscription,
+	ts: new Date(ts),
+	ls: new Date(ls),
+	lr: new Date(lr),
+	_updatedAt: new Date(_updatedAt),
+	...(oldRoomKeys && { oldRoomKeys: oldRoomKeys.map(({ ts, ...key }) => ({ ...key, ts: new Date(ts) })) }),
+	...(suggestedOldRoomKeys && { suggestedOldRoomKeys: suggestedOldRoomKeys.map(({ ts, ...key }) => ({ ...key, ts: new Date(ts) })) }),
+});

apps/meteor/client/views/room/RoomOpenerEmbedded.tsx

-import type { ISubscription, RoomType } from '@rocket.chat/core-typings';
+import type { RoomType } from '@rocket.chat/core-typings';
 import { Box, States, StatesIcon, StatesSubtitle, StatesTitle } from '@rocket.chat/fuselage';
 import { FeaturePreviewOff, FeaturePreviewOn } from '@rocket.chat/ui-client';
 import { useEndpoint, useStream, useUserId } from '@rocket.chat/ui-contexts';
@@ -20,6 +20,7 @@ import { NotAuthorizedError } from '../../lib/errors/NotAuthorizedError';
 import { NotSubscribedToRoomError } from '../../lib/errors/NotSubscribedToRoomError';
 import { OldUrlRoomError } from '../../lib/errors/OldUrlRoomError';
 import { RoomNotFoundError } from '../../lib/errors/RoomNotFoundError';
+import { mapSubscriptionFromApi } from '../../lib/utils/mapSubscriptionFromApi';
 
 const RoomProvider = lazy(() => import('./providers/RoomProvider'));
 const RoomNotFound = lazy(() => import('./RoomNotFound'));
@@ -59,7 +60,8 @@ const RoomOpenerEmbedded = ({ type, reference }: RoomOpenerProps): ReactElement
 			return;
 		}
 
-		CachedChatSubscription.upsertSubscription(subscriptionData.subscription as unknown as ISubscription);
+		CachedChatSubscription.upsertSubscription(mapSubscriptionFromApi(subscriptionData.subscription));
+
 		LegacyRoomManager.computation.invalidate();
 	}, [subscriptionData]);