Switch to importing more things from the main js-sdk export (#11394)

src/stores/room-list/MessagePreviewStore.ts

@@ -14,10 +14,9 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-import { Room, RelationType, MatrixEvent } from "matrix-js-sdk/src/matrix";
+import { Room, RelationType, MatrixEvent, Thread } from "matrix-js-sdk/src/matrix";
 import { isNullOrUndefined } from "matrix-js-sdk/src/utils";
 import { M_POLL_START } from "matrix-js-sdk/src/@types/polls";
-import { Thread } from "matrix-js-sdk/src/models/thread";
 
 import { ActionPayload } from "../../dispatcher/payloads";
 import { AsyncStoreWithClient } from "../AsyncStoreWithClient";

src/stores/widgets/StopGapWidgetDriver.ts

@@ -41,9 +41,9 @@ import {
     MatrixEvent,
     Room,
     Direction,
+    THREAD_RELATION_TYPE,
 } from "matrix-js-sdk/src/matrix";
 import { logger } from "matrix-js-sdk/src/logger";
-import { THREAD_RELATION_TYPE } from "matrix-js-sdk/src/models/thread";
 import {
     ApprovalOpts,
     CapabilitiesOpts,