safe.bareRepository: default to "explicit" with WITH_BREAKING_CHANGES #27161

Job	Run time
config	8s
fuzz smoke test	1m 15s
documentation	7m 13s
win build	5m 32s
win+Meson build	3m 49s
rust-analysis	1m 39s
sparse	3m 24s
osx-reftable (macos-14)	17m 25s
osx-gcc (macos-14)	18m 58s
osx-meson (macos-14)	27m 44s
linux-sha256 (ubuntu:rolling)	12m 49s
linux32 (i386/ubuntu:focal)	11m 0s
osx-clang (macos-14)	14m 52s
static-analysis	5m 45s
linux-musl-meson (alpine:latest)	8m 1s
linux-reftable (ubuntu:rolling)	12m 53s
linux-breaking-changes (ubuntu:rolling)	12m 11s
linux-meson (ubuntu:rolling)	13m 47s
linux-reftable-leaks (ubuntu:rolling)	27m 20s
debian-11 (debian:11)	9m 40s
almalinux-8 (almalinux:8)	9m 52s
linux-TEST-vars (ubuntu:20.04)	10m 4s
fedora-breaking-changes-meson (fedora:latest)	9m 51s
linux-leaks (ubuntu:rolling)	26m 14s
linux-asan-ubsan (ubuntu:rolling)	30m 34s
win+VS test	-1s
win+VS build	-2s
win+Meson test (4)	8m 44s
win+Meson test (9)	11m 10s
win+Meson test (8)	8m 34s
win+Meson test (5)	7m 48s
win+Meson test (2)	8m 42s
win+Meson test (6)	12m 15s
win+Meson test (3)	6m 2s
win+Meson test (0)	11m 19s
win+Meson test (1)	9m 10s
win+Meson test (7)	7m 53s
win test (3)	9m 0s
win test (6)	6m 5s
win test (9)	9m 48s
win test (0)	9m 14s
win test (1)	8m 18s
win test (7)	7m 53s
win test (8)	7m 27s
win test (5)	7m 11s
win test (4)	9m 17s
win test (2)	8m 53s
	7h 56m 40s

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