The test has been flaking in CI with the following message:
```
Failure/Error: measurement = Benchmark.measure { example.run }
expected: "draft"
got: ""
(compared using ==)
[Screenshot Image]: /__w/discourse/discourse/tmp/capybara/failures_r_spec_example_groups_chat_composer_draft_when_loading_a_channel_with_a_draft_loads_the_draft_458.png
~~~~~~~ JS LOGS ~~~~~~~
~~~~~ END JS LOGS ~~~~~
./plugins/chat/spec/system/chat_composer_draft_spec.rb:31:in `block (3 levels) in <main>'
```
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