pq rd: get rid of New watermark (empty maybe) log spam

[yumkam]

Changelog entry

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Changelog category

• Not for changelog (changelog entry is not required)

Description for reviewers

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[github-actions]

🟢 2025-09-26 13:49:16 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-09-26 13:50:01 UTC Pre-commit check linux-x86_64-release-asan for 4fac6e4 has started.
⚪ 2025-09-26 13:50:15 UTC Artifacts will be uploaded here
⚪ 2025-09-26 13:53:44 UTC ya make is running...
🟡 2025-09-26 15:59:52 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?
15437	14945	0	144	319	29

🟢 2025-09-26 15:59:57 UTC Build successful.
🟢 2025-09-26 16:00:20 UTC ydbd size 3.7 GiB changed* by +4.5 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 0cc041f	merge: 4fac6e4	diff	diff %
ydbd size	3 984 227 928 Bytes	3 984 232 584 Bytes	+4.5 KiB	+0.000%
ydbd stripped size	1 485 287 360 Bytes	1 485 288 640 Bytes	+1.2 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}

[github-actions]

⚪ 2025-09-26 13:52:12 UTC Pre-commit check linux-x86_64-relwithdebinfo for 4fac6e4 has started.
⚪ 2025-09-26 13:52:27 UTC Artifacts will be uploaded here
⚪ 2025-09-26 13:56:05 UTC ya make is running...
🟡 2025-09-26 15:33:54 UTC Some tests failed, follow the links below. Going to retry failed tests...

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
38054	35288	0	3	2733	30

⚪ 2025-09-26 15:34:03 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-09-26 15:46:32 UTC Tests successful.

Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
663 (only retried tests)	644	0	0	0	19

🟢 2025-09-26 15:46:34 UTC Build successful.
🟢 2025-09-26 15:46:51 UTC ydbd size 2.2 GiB changed* by -128 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: da05f2a	merge: 4fac6e4	diff	diff %
ydbd size	2 395 793 960 Bytes	2 395 793 832 Bytes	-128 Bytes	-0.000%
ydbd stripped size	512 341 704 Bytes	512 341 704 Bytes	0 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}