Fix the flaky test for spec/rubocop/capybara/description_extractor_spec.rb #290

Job	Run time
Test coverage	9s
Confirm config and documentation	13s
Edge RuboCop: internal_investigation	9s
Ruby 2.7: internal_investigation	24s
Edge RuboCop: spec	12s
Ruby 2.7: spec	23s
Ruby 3.0: internal_investigation	9s
Prism	24s
Ruby 3.0: spec	10s
Ruby 3.1: internal_investigation	11s
Ruby 3.1: spec	11s
RSpec 4	18s
Ruby 3.2: internal_investigation	10s
Ruby 3.2: spec	17s
Ruby 3.3: internal_investigation	8s
Ruby 3.3: spec	10s
Ruby ruby-head: internal_investigation	14s
Ruby ruby-head: spec	12s
Ruby jruby-9.4: internal_investigation	48s
Ruby jruby-9.4: spec	50s
	5m 42s

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