t0213: skip ancestry tests under user-mode emulation #28836

Job	Run time
config	7s
fuzz smoke test	1m 33s
win build	5m 7s
win+Meson build	4m 38s
documentation	7m 45s
sparse	4m 1s
static-analysis	6m 8s
osx-gcc (macos-14)	30m 30s
osx-meson (macos-14)	41m 40s
osx-reftable (macos-14)	25m 56s
osx-clang (macos-14)	28m 59s
linux-reftable (ubuntu:rolling)	17m 10s
rust-analysis	1m 30s
linux-musl-meson (alpine:latest)	18m 4s
debian-11 (debian:11)	22m 35s
linux32 (i386/ubuntu:20.04)	6h 0m 3s
linux-breaking-changes (ubuntu:rolling)	28m 11s
almalinux-8 (almalinux:8)	21m 14s
linux-leaks (ubuntu:rolling)	57m 15s
linux-sha256 (ubuntu:rolling)	27m 54s
fedora-breaking-changes-meson (fedora:latest)	22m 10s
linux-TEST-vars (ubuntu:20.04)	23m 27s
linux-meson (ubuntu:rolling)	23m 23s
linux-reftable-leaks (ubuntu:rolling)	58m 16s
linux-asan-ubsan (ubuntu:rolling)	1h 6m 14s
win+VS build	0s
win+VS test	0s
win test (7)	8m 19s
win test (6)	32m 23s
win test (2)	7m 37s
win test (9)	5m 51s
win test (1)	7m 52s
win test (8)	7m 1s
win test (0)	13m 14s
win test (4)	1h 0m 55s
win test (3)	10m 22s
win test (5)	10m 18s
win+Meson test (4)	24m 47s
win+Meson test (5)	9m 11s
win+Meson test (6)	13m 14s
win+Meson test (2)	45m 32s
win+Meson test (7)	5m 3s
win+Meson test (8)	10m 35s
win+Meson test (9)	6m 51s
win+Meson test (1)	7m 6s
win+Meson test (3)	10m 50s
win+Meson test (0)	7m 19s
	20h 8m 10s

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