fix pk usage in writing v0 chunks

[swalrus1]

Partial cherry-pick of #17830 (only fix, without normalizer)

[github-actions]

⚪ 2025-05-07 07:55:00 UTC Pre-commit check linux-x86_64-release-asan for 7243d83 has started.
⚪ 2025-05-07 07:55:12 UTC Artifacts will be uploaded here
⚪ 2025-05-07 07:58:10 UTC ya make is running...
🟡 2025-05-07 09:14:23 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?
11963	11755	0	112	60	36

⚪ 2025-05-07 09:15:24 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-05-07 09:36:24 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 | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
253 (only retried tests)	164	0	9	47	33

⚪ 2025-05-07 09:36:33 UTC ya make is running... (failed tests rerun, try 3)
🟡 2025-05-07 09:57:42 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
117 (only retried tests)	47	0	7	30	33

🟢 2025-05-07 09:57:49 UTC Build successful.
🟢 2025-05-07 09:58:18 UTC ydbd size 3.6 GiB changed* by +4.0 KiB, which is < 100.0 KiB vs stable-25-1: OK

ydbd size dash	stable-25-1: 1523d35	merge: 7243d83	diff	diff %
ydbd size	3 911 204 256 Bytes	3 911 208 304 Bytes	+4.0 KiB	+0.000%
ydbd stripped size	1 368 049 104 Bytes	1 368 049 616 Bytes	+512 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]

⚪ 2025-05-07 07:56:27 UTC Pre-commit check linux-x86_64-relwithdebinfo for 7243d83 has started.
⚪ 2025-05-07 07:56:30 UTC Artifacts will be uploaded here
⚪ 2025-05-07 07:59:18 UTC ya make is running...
🟡 2025-05-07 08:57:20 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?
18783	17499	0	3	1222	59

⚪ 2025-05-07 08:59:07 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-05-07 09:19:34 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
132 (only retried tests)	74	0	0	0	58

🟢 2025-05-07 09:19:40 UTC Build successful.
🟢 2025-05-07 09:19:58 UTC ydbd size 2.1 GiB changed* by +2.2 KiB, which is < 100.0 KiB vs stable-25-1: OK

ydbd size dash	stable-25-1: 1523d35	merge: 7243d83	diff	diff %
ydbd size	2 248 485 552 Bytes	2 248 487 840 Bytes	+2.2 KiB	+0.000%
ydbd stripped size	475 855 800 Bytes	475 855 992 Bytes	+192 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]

🟢 2025-05-07 07:58:27 UTC The validation of the Pull Request description is successful.