testsuite: add issue reproducer for #5518 #2385

Job	Run time
validate commits	0s
python linting	50s
spelling	6s
Generate build matrix	9s
bookworm	12m 36s
bookworm - 32 bit	13m 23s
bookworm - gcc-12,content-s3,distcheck	28m 1s
bookworm - py3.11,clang-15	27m 23s
coverage	23m 15s
jammy - test-install	9m 49s
bookworm - test-install	10m 7s
focal - py3.8	13m 29s
el8	27m 5s
el8 - ascii	31m 53s
el8 - system,coverage	6m 9s
fedora34 - gcc-11.2,py3.9	25m 11s
fedora38 - gcc-13.1,py3.11	12m 10s
inception	39m 15s
flux-sched check	10m 3s
flux-accounting check	6m 45s
flux-pam check	4m 2s
flux-pmix check	16m 37s
Generate docker manifest	1s
	5h 18m 19s

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