kvs: report error to all fence requests #10171

Job	Run time
validate commits	12s
python linting	34s
Generate build matrix	7s
spelling	6s
bookworm - test-install	12m 15s
bookworm - 32 bit	14m 45s
noble - test-install	12m 49s
el9 - test-install	12m 50s
alpine - test-install	12m 32s
fedora40 - test-install	12m 3s
jammy - test-install	12m 7s
focal - py3.8	17m 6s
bookworm - gcc-12,content-s3,distcheck	20m 8s
fedora40 - clang-18	16m 47s
coverage	24m 25s
el8 - ascii	20m 4s
el8 - test-install	13m 38s
el8 - system,coverage	7m 17s
inception	21m 36s
flux-accounting check	4m 46s
macos build only	4m 14s
flux-pam check	4m 12s
flux-pmix check	13m 11s
flux-sched check	7m 0s
Generate docker manifest	1s
	4h 24m 45s

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