Optimize CPU usage when read blob (always use count limit, fix)

[nshestakov]

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[github-actions]

⚪ 2024-12-09 13:16:16 UTC Pre-commit check linux-x86_64-release-asan for 351da3e has started.
⚪ 2024-12-09 13:16:29 UTC Artifacts will be uploaded here
⚪ 2024-12-09 13:19:22 UTC ya make is running...
🟡 2024-12-09 14:22:11 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?
13296	13224	0	21	4	47

🟢 2024-12-09 14:23:19 UTC Build successful.
🟢 2024-12-09 14:23:48 UTC ydbd size 4.9 GiB changed* by +432 Bytes, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 0a7a679	merge: 351da3e	diff	diff %
ydbd size	5 305 817 416 Bytes	5 305 817 848 Bytes	+432 Bytes	+0.000%
ydbd stripped size	1 365 569 648 Bytes	1 365 569 520 Bytes	-128 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]

⚪ 2024-12-09 13:17:28 UTC Pre-commit check linux-x86_64-relwithdebinfo for 351da3e has started.
⚪ 2024-12-09 13:17:39 UTC Artifacts will be uploaded here
⚪ 2024-12-09 13:20:42 UTC ya make is running...
🟡 2024-12-09 14:12:07 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?
21013	19502	0	1	1397	113

⚪ 2024-12-09 14:13:51 UTC ya make is running... (failed tests rerun, try 2)
🟢 2024-12-09 14:25:38 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
639 (only retried tests)	534	0	0	0	105

🟢 2024-12-09 14:25:48 UTC Build successful.
🟢 2024-12-09 14:26:07 UTC ydbd size 2.5 GiB changed* by -16 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 0a7a679	merge: 351da3e	diff	diff %
ydbd size	2 699 396 888 Bytes	2 699 396 872 Bytes	-16 Bytes	-0.000%
ydbd stripped size	483 497 424 Bytes	483 497 424 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}