Don't re-export MainSplitContentType enum (#34021)

* Don't re-export MainSplitContentType enum

I don't see why this was necessary, importing RoomView pulls in all sort
of stuff, whereas RoomContext is much smaller.

* ts, not tsx

* unintentional change

apps/web/test/test-utils/room.ts

@@ -10,7 +10,7 @@ import { type MockedObject } from "jest-mock-vitest-adapter";
 import { type EventTimeline, EventType, type MatrixClient, type MatrixEvent, Room } from "matrix-js-sdk/src/matrix";
 import { KnownMembership } from "matrix-js-sdk/src/types";
 
-import { MainSplitContentType } from "../../src/components/structures/RoomView";
+import { MainSplitContentType } from "../../src/contexts/RoomContext";
 import { type RoomContextType, TimelineRenderingType } from "../../src/contexts/RoomContext";
 import { Layout } from "../../src/settings/enums/Layout";
 import { mkEvent } from "./test-utils";

apps/web/test/unit-tests/components/views/rooms/SendMessageComposer-test.tsx

@@ -25,7 +25,7 @@ import { MatrixClientPeg } from "../../../../../src/MatrixClientPeg";
 import defaultDispatcher from "../../../../../src/dispatcher/dispatcher";
 import DocumentOffset from "../../../../../src/editor/offset";
 import { Layout } from "../../../../../src/settings/enums/Layout";
-import { MainSplitContentType } from "../../../../../src/components/structures/RoomView";
+import { MainSplitContentType } from "../../../../../src/contexts/RoomContext";
 import { mockPlatformPeg } from "../../../../test-utils/platform";
 import { doMaybeLocalRoomAction } from "../../../../../src/utils/local-room";
 import { addTextToComposer } from "../../../../test-utils/composer";