Update dependency typescript to v5 (#10532)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>

src/@types/global.d.ts

@@ -15,8 +15,6 @@ limitations under the License.
 */
 
 import "matrix-js-sdk/src/@types/global"; // load matrix-js-sdk's type extensions first
-// Load types for the WG CSS Font Loading APIs https://github.com/Microsoft/TypeScript/issues/13569
-import "@types/css-font-loading-module";
 import "@types/modernizr";
 
 import ContentMessages from "../ContentMessages";

src/events/RelationsHelper.ts

@@ -121,7 +121,7 @@ export class RelationsHelper extends TypedEventEmitter<RelationsHelperEvent, Eve
                     limit: 50,
                 },
             );
-            nextBatch = response?.nextBatch;
+            nextBatch = response?.nextBatch ?? undefined;
             response?.events.forEach((e) => this.emit(RelationsHelperEvent.Add, e));
         } while (nextBatch);
     }

src/utils/exportUtils/Exporter.ts

@@ -201,7 +201,7 @@ export default abstract class Exporter {
                 );
             }
 
-            prevToken = res.end;
+            prevToken = res.end ?? null;
         }
         // Reverse the events so that we preserve the order
         for (let i = 0; i < Math.floor(events.length / 2); i++) {