Obsolete `StringAsInstanceDoubleConstant` in favor of `VerifiedDoubleReference` for constants only #2446

Job	Run time
Confirm config and documentation	8s
Edge RuboCop: internal_investigation	1s
Ruby 2.7: internal_investigation	29s
Edge RuboCop: spec	19s
Ruby 2.7: spec	30s
Ruby 3.0: internal_investigation	11s
Ruby 3.0: spec	17s
Ruby 3.1: internal_investigation	11s
Ruby 3.1: spec	17s
Test coverage	22s
Ruby 3.2: internal_investigation	15s
Oldest RuboCop: spec	19s
Ruby 3.2: spec	19s
Ruby 3.3: internal_investigation	14s
Prism	30s
Ruby 3.3: spec	19s
RSpec 4	22s
Ruby 3.4: internal_investigation	11s
Ruby 3.4: spec	21s
Ruby ruby-head: internal_investigation	15s
Ruby ruby-head: spec	18s
Ruby jruby-9.4: internal_investigation	20s
Ruby jruby-9.4: spec	19s
	6m 47s

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