kvs: remove stats clearing #10221

Job	Run time
validate commits	14s
Generate build matrix	7s
python linting	31s
spelling	8s
bookworm - test-install	12m 25s
bookworm - 32 bit	13m 16s
noble - test-install	13m 15s
el9 - test-install	12m 20s
alpine - test-install	12m 45s
fedora40 - test-install	11m 52s
jammy - test-install	11m 34s
focal - py3.8	16m 47s
bookworm - gcc-12,content-s3,distcheck	19m 27s
fedora40 - clang-18	17m 29s
coverage	23m 59s
el8 - ascii	19m 26s
el8 - test-install	14m 24s
el8 - system,coverage	7m 21s
inception	21m 11s
flux-sched check	6m 52s
flux-pmix check	13m 46s
flux-accounting check	4m 47s
macos build only	2m 58s
flux-pam check	4m 40s
Generate docker manifest	0s
	4h 21m 34s

Provide feedback