DAOS-14248 engine: strengthen signals handling (#13031) #6778

Job	Run time
Build DAOS (alma.8)	38m 20s
Build DAOS (ARM64) (ubuntu, clang)	1s
Build DAOS (ARM64) (alma.8, clang)	1s
Build DAOS (alma.9)	40m 27s
Build DAOS (ARM64) (leap.15, clang)	1s
Build DAOS (rocky.8)	40m 42s
Create Docker images (ubuntu)	8m 37s
Build DAOS (ubuntu)	36m 4s
Create Docker images (rocky)	9m 44s
Create Docker images (fedora)	10m 22s
Create Docker images (leap.15)	11m 54s
Run DAOS/NLT tests (ubuntu)	26m 18s
Build DAOS in image (ubuntu, clang)	21m 18s
Build DAOS in image (ubuntu, gcc)	23m 5s
Build DAOS in image (rocky, clang)	24m 19s
Build DAOS in image (rocky, gcc)	25m 28s
Build DAOS in image (fedora, clang)	24m 24s
Build DAOS in image (fedora, gcc)	24m 52s
Build DAOS in image (leap.15, clang)	27m 41s
Build DAOS in image (leap.15, gcc)	27m 18s
	7h 0m 56s

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