safe.bareRepository: default to "explicit" with WITH_BREAKING_CHANGES #2138

Job	Run time
config	7s
fuzz smoke test	1m 28s
win+Meson build	6m 12s
win+VS build	0s
win build	5m 4s
rust-analysis	1m 47s
documentation	7m 11s
sparse	3m 30s
osx-reftable (macos-14)	19m 28s
osx-meson (macos-14)	20m 55s
osx-clang (macos-14)	19m 59s
static-analysis	5m 34s
osx-gcc (macos-14)	20m 28s
linux-meson (ubuntu:rolling)	12m 14s
linux-TEST-vars (ubuntu:20.04)	12m 23s
linux-reftable (ubuntu:rolling)	13m 3s
almalinux-8 (almalinux:8)	10m 9s
linux-breaking-changes (ubuntu:rolling)	11m 50s
linux-sha256 (ubuntu:rolling)	12m 38s
win+VS test	-1s
debian-11 (debian:11)	9m 46s
linux-asan-ubsan (ubuntu:rolling)	31m 38s
linux-reftable-leaks (ubuntu:rolling)	27m 14s
linux32 (i386/ubuntu:focal)	9m 56s
fedora-breaking-changes-meson (fedora:latest)	9m 45s
linux-musl-meson (alpine:latest)	8m 5s
linux-leaks (ubuntu:rolling)	25m 20s
win test (8)	8m 5s
win test (6)	5m 19s
win test (0)	5m 42s
win test (5)	8m 23s
win test (1)	8m 5s
win test (4)	10m 16s
win test (2)	8m 8s
win test (9)	10m 24s
win test (3)	8m 51s
win test (7)	5m 15s
win+Meson test (2)	8m 56s
win+Meson test (4)	6m 23s
win+Meson test (3)	6m 14s
win+Meson test (6)	16m 47s
win+Meson test (8)	11m 11s
win+Meson test (9)	6m 16s
win+Meson test (0)	6m 36s
win+Meson test (1)	9m 13s
win+Meson test (7)	9m 38s
win+Meson test (5)	7m 45s
	7h 53m 10s

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