[Backport stable-25-3-1] Use default value of BufferPageAllocSize from proto

[ydbot]

Description

Backport of #28237 to stable-25-3-1.

[github-actions]

🟢 2025-11-06 15:39:25 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-11-06 15:39:52 UTC Pre-commit check linux-x86_64-relwithdebinfo for a98b979 has started.
⚪ 2025-11-06 15:40:08 UTC Artifacts will be uploaded here
⚪ 2025-11-06 15:43:48 UTC ya make is running...
🟡 2025-11-06 17:13:33 UTC Some tests failed, follow the links below. Going to retry failed tests...

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
30618	29289	0	11	1293	25

⚪ 2025-11-06 17:16:16 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-11-06 17:31:28 UTC Some tests failed, follow the links below. Going to retry failed tests...

Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
714 (only retried tests)	699	0	1	0	14

⚪ 2025-11-06 17:31:38 UTC ya make is running... (failed tests rerun, try 3)
🟢 2025-11-06 17:44:32 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
524 (only retried tests)	509	0	0	1	14

🟢 2025-11-06 17:44:43 UTC Build successful.
🟢 2025-11-06 17:45:00 UTC ydbd size 2.3 GiB changed* by -224 Bytes, which is <= 0 Bytes vs stable-25-3-1: OK

ydbd size dash	stable-25-3-1: 0aec86a	merge: a98b979	diff	diff %
ydbd size	2 435 735 056 Bytes	2 435 734 832 Bytes	-224 Bytes	-0.000%
ydbd stripped size	521 619 816 Bytes	521 619 816 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}

[github-actions]

⚪ 2025-11-06 15:39:57 UTC Pre-commit check linux-x86_64-release-asan for a98b979 has started.
⚪ 2025-11-06 15:40:13 UTC Artifacts will be uploaded here
⚪ 2025-11-06 15:43:42 UTC ya make is running...
🟡 2025-11-06 17:47:45 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?
15315	14768	0	221	306	20

🟢 2025-11-06 17:49:10 UTC Build successful.
🟢 2025-11-06 17:49:34 UTC ydbd size 3.8 GiB changed* by -112 Bytes, which is <= 0 Bytes vs stable-25-3-1: OK

ydbd size dash	stable-25-3-1: 0aec86a	merge: a98b979	diff	diff %
ydbd size	4 053 112 232 Bytes	4 053 112 120 Bytes	-112 Bytes	-0.000%
ydbd stripped size	1 510 615 200 Bytes	1 510 615 264 Bytes	+64 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}