Fix an error for `Capybara/RSpec/HaveSelector` when passing no arguments #284

Job	Run time
Confirm config and documentation	15s
Test coverage	15s
Edge RuboCop: internal_investigation	17s
Edge RuboCop: spec	18s
Ruby 2.7: internal_investigation	19s
Prism	43s
Ruby 2.7: spec	19s
Ruby 3.0: internal_investigation	14s
Ruby 3.0: spec	15s
RSpec 4	21s
Ruby 3.1: internal_investigation	19s
Ruby 3.1: spec	21s
Ruby 3.2: internal_investigation	15s
Ruby 3.2: spec	15s
Ruby 3.3: internal_investigation	13s
Ruby 3.3: spec	14s
Ruby ruby-head: internal_investigation	15s
Ruby ruby-head: spec	1s
Ruby jruby-9.4: internal_investigation	15s
Ruby jruby-9.4: spec	16s
	5m 40s

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