Fix #14369: Move boolean literal evaluation to valueFlowSetConstantValue #233

Job	Run time
build (tsan, -DANALYZE_THREAD=On, false, thread, false, --executor=thread --error-exitcode=0)	11m 1s
build (asan, -DANALYZE_ADDRESS=On, true, process, false)	14m 28s
build (ubsan, -DANALYZE_UNDEFINED=On, true, process, true)	3m 20s
	28m 49s

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