RuntimeError: Set changed size during iteration in webutils.py

[Snuffy2]

Version of SearXNG, commit number if you are using on master branch and stipulate if you forked SearXNG
searxng-docker: 2024.5.7+58320222e
Not forked

How did you install SearXNG?
searxng-docker
image: searxng/searxng:latest

What happened?
When search engines timeout, I'm seeing the error below in the logs.

How To Reproduce
Search with several engines timing out.

Screenshots & Logs

searxng  | 2024-05-09 12:00:02,806 ERROR:searx.engines.brave: engine timeout
searxng  | 2024-05-09 12:00:02,853 ERROR:searx.webapp: Exception on /search [POST]
searxng  | Traceback (most recent call last):
searxng  |   File "/usr/lib/python3.11/site-packages/flask/app.py", line 1473, in wsgi_app
searxng  |     response = self.full_dispatch_request()
searxng  |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
searxng  |   File "/usr/lib/python3.11/site-packages/flask/app.py", line 882, in full_dispatch_request
searxng  |     rv = self.handle_user_exception(e)
searxng  |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
searxng  |   File "/usr/lib/python3.11/site-packages/flask/app.py", line 880, in full_dispatch_request
searxng  |     rv = self.dispatch_request()
searxng  |          ^^^^^^^^^^^^^^^^^^^^^^^
searxng  |   File "/usr/lib/python3.11/site-packages/flask/app.py", line 865, in dispatch_request
searxng  |     return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)  # type: ignore[no-any-return]
searxng  |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
searxng  |   File "/usr/local/searxng/searx/webapp.py", line 782, in search
searxng  |     unresponsive_engines = webutils.get_translated_errors(
searxng  |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
searxng  |   File "/usr/local/searxng/searx/webutils.py", line 73, in get_translated_errors
searxng  |     for unresponsive_engine in unresponsive_engines:
searxng  | RuntimeError: Set changed size during iteration

Additional context