add lost pragma once

[uzhastik]

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[github-actions]

⚪ 2024-10-03 08:33:43 UTC Pre-commit check linux-x86_64-relwithdebinfo for ef1bb35 has started.
⚪ 2024-10-03 08:33:53 UTC Artifacts will be uploaded here
⚪ 2024-10-03 08:36:47 UTC ya make is running...
🟡 2024-10-03 09:38:06 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?
73492	59554	0	14	13826	98

⚪ 2024-10-03 09:45:18 UTC ya make is running... (failed tests rerun, try 2)
🟢 2024-10-03 09:56:28 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
110 (only retried tests)	19	0	0	0	91

🟢 2024-10-03 09:56:35 UTC Build successful.
🟢 2024-10-03 09:56:54 UTC ydbd size 2.8 GiB changed* by +144 Bytes, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 6e20d54	merge: ef1bb35	diff	diff %
ydbd size	3 001 743 936 Bytes	3 001 744 080 Bytes	+144 Bytes	+0.000%
ydbd stripped size	477 340 472 Bytes	477 340 472 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]

⚪ 2024-10-03 08:34:20 UTC Pre-commit check linux-x86_64-release-asan for ef1bb35 has started.
⚪ 2024-10-03 08:34:31 UTC Artifacts will be uploaded here
⚪ 2024-10-03 08:37:29 UTC ya make is running...
🟡 2024-10-03 10:31:14 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?
10758	10284	0	65	345	64

🟢 2024-10-03 10:32:23 UTC Build successful.
🟢 2024-10-03 10:32:56 UTC ydbd size 5.7 GiB changed* by +48 Bytes, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 6e20d54	merge: ef1bb35	diff	diff %
ydbd size	6 086 031 296 Bytes	6 086 031 344 Bytes	+48 Bytes	+0.000%
ydbd stripped size	1 520 514 544 Bytes	1 520 514 480 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}