25-1: Fixed bugs with exporting/importing changegeeds and added tests

[stanislav-shchetinin]

Changelog category

• Not for changelog (changelog entry is not required)

Description for reviewers

Cherry-picked from: #13902 (пофикшено зависание экспорта при ребутах, добавлены тесты), #15588 + #15713 (пофикшен сегфолт, возникающий при неправильной конфигурации changefeed'а - добавлена отмена операции + тесты)

[github-actions]

⚪ 2025-03-17 09:22:33 UTC Pre-commit check linux-x86_64-release-asan for d5ebe96 has started.
⚪ 2025-03-17 09:22:48 UTC Artifacts will be uploaded here
⚪ 2025-03-17 09:26:17 UTC ya make is running...
🟡 2025-03-17 11:17:19 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet Going to retry failed tests...

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
13824	13745	0	32	10	37

⚪ 2025-03-17 11:18:29 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-03-17 11:38:41 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
126 (only retried tests)	89	0	0	1	36

🟢 2025-03-17 11:38:48 UTC Build successful.
🟢 2025-03-17 11:39:21 UTC ydbd size 3.6 GiB changed* by +94.1 KiB, which is < 100.0 KiB vs stable-25-1: OK

ydbd size dash	stable-25-1: 1df9f70	merge: d5ebe96	diff	diff %
ydbd size	3 901 760 104 Bytes	3 901 856 504 Bytes	+94.1 KiB	+0.002%
ydbd stripped size	1 365 470 608 Bytes	1 365 507 984 Bytes	+36.5 KiB	+0.003%

^{*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]

⚪ 2025-03-17 09:23:51 UTC Pre-commit check linux-x86_64-relwithdebinfo for d5ebe96 has started.
⚪ 2025-03-17 09:24:06 UTC Artifacts will be uploaded here
⚪ 2025-03-17 09:27:23 UTC ya make is running...
🟡 2025-03-17 11:08:10 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?
28087	25484	0	4	2465	134

⚪ 2025-03-17 11:10:56 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-03-17 11:32:14 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
211 (only retried tests)	73	0	0	7	131

🟢 2025-03-17 11:32:20 UTC Build successful.
🟢 2025-03-17 11:32:40 UTC ydbd size 2.1 GiB changed* by +50.9 KiB, which is < 100.0 KiB vs stable-25-1: OK

ydbd size dash	stable-25-1: 1df9f70	merge: d5ebe96	diff	diff %
ydbd size	2 243 013 664 Bytes	2 243 065 816 Bytes	+50.9 KiB	+0.002%
ydbd stripped size	475 014 648 Bytes	475 023 160 Bytes	+8.3 KiB	+0.002%

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