fixed #14658 - do not append extension in lookup if a relative path h… #19405

Job	Run time
build_make (ubuntu:25.10)	5m 5s
build_cmake (ubuntu:24.04, true, true)	4m 26s
build_make (alpine:3.23)	5m 59s
build_make (ubuntu:24.04)	4m 44s
build_cmake (ubuntu:25.10, true, true)	4m 41s
build_cmake (alpine:3.23, false, false)	4m 27s
	29m 22s

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