Fix #14711 FP identicalInnerCondition, return expression is not condi… #19629

Job	Run time
build_make (ubuntu:24.04)	2m 45s
build_cmake (ubuntu:25.10, true, true)	2m 49s
build_make (alpine:3.23)	5m 51s
build_cmake (ubuntu:24.04, true, true)	2m 48s
build_cmake (alpine:3.23, false, false)	3m 34s
build_make (ubuntu:25.10)	3m 47s
	21m 34s

Provide feedback