Fix a bug in RSpec/PredicateMatcher #2501

Job	Run time
Test coverage	16s
Edge RuboCop: internal_investigation	17s
Edge RuboCop: spec	17s
Confirm config and documentation	9s
Ruby 2.7: internal_investigation	25s
Oldest RuboCop: spec	17s
Ruby 2.7: spec	36s
Prism	32s
Ruby 3.0: internal_investigation	12s
RSpec 4	22s
Ruby 3.0: spec	18s
Ruby 3.1: internal_investigation	10s
Ruby 3.1: spec	23s
Ruby 3.2: internal_investigation	10s
Ruby 3.2: spec	18s
Ruby 3.3: internal_investigation	12s
Ruby 3.3: spec	18s
Ruby 3.4: internal_investigation	11s
Ruby 3.4: spec	16s
Ruby ruby-head: internal_investigation	15s
Ruby ruby-head: spec	18s
Ruby jruby-9.4: internal_investigation	1m 31s
Ruby jruby-9.4: spec	1m 21s
	9m 4s

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