report: introduce helper _provide_uncompressed_coredump_file() #1939

Job	Run time
system-installed	14m 2s
linter	1m 33s
skip (ubuntu:noble)	2m 31s
system (ubuntu:noble)	12m 39s
skip (ubuntu:oracular)	2m 34s
system (ubuntu:oracular)	13m 51s
unit-and-integration (debian:bookworm-slim)	2m 58s
skip (ubuntu:plucky)	2m 37s
unit-and-integration-installed	3m 14s
unit-and-integration (debian:testing-slim)	3m 18s
system (ubuntu:plucky)	12m 3s
unit-and-integration (ubuntu:noble)	3m 9s
unit-and-integration (ubuntu:oracular)	3m 12s
woke	5s
unit-and-integration (ubuntu:plucky)	3m 34s
upload-to-codecov	8s
	1h 21m 28s

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