Fix #14889 FP constStatement with GNU statement expression #20242

Job	Run time
build_cmake (alpine:3.23, false, false)	4m 19s
build_make (ubuntu:25.10)	2m 58s
build_make (ubuntu:24.04)	3m 9s
build_make (alpine:3.23)	6m 4s
build_cmake (ubuntu:24.04, true, true)	2m 50s
build_cmake (ubuntu:25.10, true, true)	2m 54s
	22m 14s

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