25-1-1: Fix for a bug with backward compatibility in the export of changefeeds

[stanislav-shchetinin]

Changelog category

• Not for changelog (changelog entry is not required)

Description for reviewers

Фикс бага из ишью.

Cherry-picked from: #15435

[github-actions]

⚪ 2025-03-10 17:43:42 UTC Pre-commit check linux-x86_64-relwithdebinfo for 531cf50 has started.
⚪ 2025-03-10 17:43:56 UTC Artifacts will be uploaded here
⚪ 2025-03-10 17:47:05 UTC ya make is running...
🟡 2025-03-10 19:22:01 UTC Some tests failed, follow the links below. Going to retry failed tests...

Details

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
28059	25449	0	12	2463	135

⚪ 2025-03-10 19:24:29 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-03-10 19:45:56 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
221 (only retried tests)	86	0	0	5	130

🟢 2025-03-10 19:46:05 UTC Build successful.
🟢 2025-03-10 19:46:24 UTC ydbd size 2.1 GiB changed* by +7.2 KiB, which is < 100.0 KiB vs stable-25-1-1: OK

ydbd size dash	stable-25-1-1: e9043b5	merge: 531cf50	diff	diff %
ydbd size	2 242 095 080 Bytes	2 242 102 496 Bytes	+7.2 KiB	+0.000%
ydbd stripped size	474 852 984 Bytes	474 857 336 Bytes	+4.2 KiB	+0.001%

^{*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]

⚪ 2025-03-10 17:44:41 UTC Pre-commit check linux-x86_64-release-asan for 531cf50 has started.
⚪ 2025-03-10 17:44:44 UTC Artifacts will be uploaded here
⚪ 2025-03-10 17:47:56 UTC ya make is running...
🔴 2025-03-10 21:38:06 UTC Too many tests failed, NOT going to retry
🟡 2025-03-10 21:39:54 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?
13696	11932	0	708	992	64

🟢 2025-03-10 21:41:06 UTC Build successful.
🟢 2025-03-10 21:41:41 UTC ydbd size 3.6 GiB changed* by +8.0 KiB, which is < 100.0 KiB vs stable-25-1-1: OK

ydbd size dash	stable-25-1-1: e9043b5	merge: 531cf50	diff	diff %
ydbd size	3 900 147 096 Bytes	3 900 155 264 Bytes	+8.0 KiB	+0.000%
ydbd stripped size	1 365 038 000 Bytes	1 365 042 160 Bytes	+4.1 KiB	+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}