I cannot rename created torrents anymore

[dertuxmalwieder]

Describe the bug
I created a torrent, added it to my channel, then tried to rename it. An error occurred.

An error occurred during the request:

Traceback (most recent call last):
  File "tribler_core\components\restapi\rest\rest_manager.py", line 59, in error_middleware
  File "aiohttp\web_middlewares.py", line 117, in impl
  File "tribler_core\components\metadata_store\restapi\metadata_endpoint.py", line 155, in update_channel_entry
  File "<string>", line 2, in update_entry
  File "pony\orm\core.py", line 533, in new_func
  File "tribler_core\components\metadata_store\restapi\metadata_endpoint.py", line 43, in update_entry
  File "tribler_core\components\metadata_store\db\orm_bindings\channel_node.py", line 265, in update_properties
AttributeError: 'TorrentMetadata' object has no attribute ''

To Reproduce

1. Create a channel.
2. Create a torrent there.
3. Try to rename it.

Expected behavior
The torrent is renamed. It worked fine on 7.10.0.

Screenshots

You can see both the old (AMD64) and new (MidnightBSD 2.1.2 AMD64) name. The latter is not applied.

Desktop (please complete the following information):

• OS: Windows 11.
• Tribler's version: 7.11 RC1.