Fix #14634: Inconsistent AST for array declarations #19942

Job	Run time
build_cmake (ubuntu:24.04, true, true)	5m 16s
build_make (ubuntu:24.04)	4m 16s
build_make (alpine:3.23)	5m 1s
build_cmake (ubuntu:25.10, true, true)	3m 14s
build_make (ubuntu:25.10)	3m 56s
build_cmake (alpine:3.23, false, false)	3m 48s
	25m 31s

Provide feedback