Fix #14931: dump file: Add classDef to scope #20445

Job	Run time
build_make (alpine:3.23)	4m 48s
build_make (ubuntu:24.04)	9m 59s
build_cmake (ubuntu:25.10, true, true)	4m 15s
build_cmake (ubuntu:24.04, true, true)	30m 1s
build_cmake (alpine:3.23, false, false)	4m 30s
build_make (ubuntu:25.10)	8m 21s
build_cmake (ubuntu:25.10, true, true)	6m 25s
build_make (ubuntu:24.04)	9m 59s
build_cmake (ubuntu:24.04, true, true)	30m 1s
build_make (alpine:3.23)	4m 48s
build_make (ubuntu:25.10)	8m 21s
build_cmake (alpine:3.23, false, false)	4m 30s
build_cmake (ubuntu:25.10, true, true)	8m 32s
build_cmake (alpine:3.23, false, false)	4m 30s
build_make (ubuntu:24.04)	9m 59s
build_cmake (ubuntu:24.04, true, true)	30m 1s
build_make (alpine:3.23)	4m 48s
build_make (ubuntu:25.10)	8m 21s
build_cmake (ubuntu:25.10, true, true)	14m 58s
build_make (ubuntu:24.04)	9m 59s
build_cmake (ubuntu:24.04, true, true)	30m 1s
build_make (ubuntu:25.10)	8m 21s
build_cmake (alpine:3.23, false, false)	4m 30s
build_make (alpine:3.23)	4m 48s
	4h 24m 46s

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