avoid changing shardstate reads list during iteration

[ssmike]

Changelog entry

Changelog category

• Bugfix

[github-actions]

⚪ 2024-11-29 15:50:10 UTC Pre-commit check linux-x86_64-release-asan for 0104f73 has started.
⚪ 2024-11-29 15:50:21 UTC Artifacts will be uploaded here
⚪ 2024-11-29 15:53:18 UTC ya make is running...
🟡 2024-11-29 16:55:26 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
13231	13170	0	11	5	45

🟢 2024-11-29 16:56:30 UTC Build successful.
🟢 2024-11-29 16:56:58 UTC ydbd size 4.9 GiB changed* by +3.7 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 8edc4ee	merge: 0104f73	diff	diff %
ydbd size	5 281 682 168 Bytes	5 281 685 944 Bytes	+3.7 KiB	+0.000%
ydbd stripped size	1 361 444 816 Bytes	1 361 445 456 Bytes	+640 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]

⚪ 2024-11-29 15:51:24 UTC Pre-commit check linux-x86_64-relwithdebinfo for 0104f73 has started.
⚪ 2024-11-29 15:51:35 UTC Artifacts will be uploaded here
⚪ 2024-11-29 15:54:30 UTC ya make is running...
🟡 2024-11-29 16:42:25 UTC Some tests failed, follow the links below. Going to retry failed tests...

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
20916	19406	0	1	1396	113

⚪ 2024-11-29 16:44:05 UTC ya make is running... (failed tests rerun, try 2)
🟢 2024-11-29 16:55:41 UTC Tests successful.

Test history | Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
740 (only retried tests)	634	0	0	0	106

🟢 2024-11-29 16:55:51 UTC Build successful.
🟢 2024-11-29 16:56:10 UTC ydbd size 2.5 GiB changed* by +3.0 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 8edc4ee	merge: 0104f73	diff	diff %
ydbd size	2 687 135 784 Bytes	2 687 138 888 Bytes	+3.0 KiB	+0.000%
ydbd stripped size	482 300 496 Bytes	482 301 072 Bytes	+576 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}

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