Regression: Add migration for omni rooms with no source (#24012)

server/startup/migrations/index.ts

@@ -75,4 +75,5 @@ import './v248';
 import './v249';
 import './v250';
 import './v251';
+import './v252';
 import './xrun';

server/startup/migrations/v252.ts

@@ -0,0 +1,20 @@
+import { Rooms } from '../../../app/models/server/raw';
+import { IOmnichannelRoom, OmnichannelSourceType } from '../../../definition/IRoom';
+import { addMigration } from '../../lib/migrations';
+
+
+addMigration({
+	version: 252,
+	async up() {
+		await Rooms.updateMany(
+			{ $and: [{ t: 'l' }, { source: { $exists: false } }] },
+			{
+				$set: {
+					source: {
+						type: OmnichannelSourceType.OTHER,
+					} as IOmnichannelRoom['source'],
+				},
+			},
+		);
+	},
+});