Add support for native xml parsing. #11953

Job	Run time
build_details	3s
build_js	2m 17s
build_opam (4.14.x)	13m 51s
build_opam (5.2.x)	5m 9s
tree_sitter_parse	49s
build_win32 (x64)	5m 7s
build_no_depopts	5m 51s
build_posix (debian_trixie, amd64)	14m 44s
lezer_parse	47s
build_posix (debian_trixie, arm64)	13m 46s
build_posix (debian_bookworm, amd64)	14m 50s
run_tests (@citest)	12m 59s
build_posix (debian_bookworm, arm64)	12m 53s
update_doc	0s
build_posix (ubuntu_oracular, amd64)	13m 39s
run_tests (@doctest)	7m 35s
run_tests (@mediatest)	12m 13s
build_posix (ubuntu_oracular, arm64)	12m 31s
build_posix (ubuntu_noble, amd64)	14m 44s
build_posix (ubuntu_noble, arm64)	12m 47s
build_posix (alpine, amd64)	10m 9s
build_posix (alpine, arm64)	8m 44s
fetch_s3_artifacts	20s
build_docker_minimal (amd64)	2m 16s
build_docker_minimal (arm64)	2m 2s
build_docker (amd64)	2m 43s
build_docker_alpine (amd64)	1m 6s
build_docker (arm64)	2m 4s
update_release	0s
build_docker_alpine (arm64)	58s
build_docker_alpine_minimal (amd64)	48s
build_docker_alpine_minimal (arm64)	1m 11s
build_docker_release-minimal	0s
build_docker_release	0s
	3h 28m 56s

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