do not report RED storage issue when schemeshard is down

[vporyadke]

Changelog entry

healthcheck: do not report RED storage issue when info about storage pools is unavailiable

Changelog category

• Improvement

Description for reviewers

...

[github-actions]

⚪ 2025-10-31 10:30:35 UTC Pre-commit check linux-x86_64-relwithdebinfo for bf6ff91 has started.
⚪ 2025-10-31 10:30:53 UTC Artifacts will be uploaded here
⚪ 2025-10-31 10:32:16 UTC ya make is running...
🟡 2025-10-31 12:00:08 UTC Some tests failed, follow the links below. Going to retry failed tests...

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
39113	36293	0	1	2791	28

⚪ 2025-10-31 12:00:23 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-10-31 12:11:11 UTC Tests successful.

Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
53 (only retried tests)	39	0	0	0	14

🟢 2025-10-31 12:11:14 UTC Build successful.
🟢 2025-10-31 12:11:30 UTC ydbd size 2.3 GiB changed* by +4.9 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 0cbb971	merge: bf6ff91	diff	diff %
ydbd size	2 426 561 136 Bytes	2 426 566 192 Bytes	+4.9 KiB	+0.000%
ydbd stripped size	515 717 512 Bytes	515 718 472 Bytes	+960 Bytes	+0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[github-actions]

🟢 2025-10-31 10:32:11 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-10-31 10:33:04 UTC Pre-commit check linux-x86_64-release-asan for bf6ff91 has started.
⚪ 2025-10-31 10:33:21 UTC Artifacts will be uploaded here
⚪ 2025-10-31 10:34:41 UTC ya make is running...
🟡 2025-10-31 12:30:54 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
15521	15108	0	135	256	22

🟢 2025-10-31 12:31:00 UTC Build successful.
🟢 2025-10-31 12:31:22 UTC ydbd size 3.8 GiB changed* by +2.6 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: a04e6ba	merge: bf6ff91	diff	diff %
ydbd size	4 063 322 088 Bytes	4 063 324 776 Bytes	+2.6 KiB	+0.000%
ydbd stripped size	1 508 300 152 Bytes	1 508 301 112 Bytes	+960 Bytes	+0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}