handle null Engine in CS schema

[swalrus1]

Changelog entry

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Changelog category

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Description for reviewers

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[github-actions]

⚪ 2025-03-24 14:53:58 UTC Pre-commit check for b2bba73 has started.
⚪ 2025-03-24 14:56:34 UTC Build linux-x86_64-relwithdebinfo is running...
🟢 2025-03-24 15:37:26 UTC Build successful.
⚪ 2025-03-24 15:37:41 UTC Tests are running...
🔴 2025-03-24 17:25:07 UTC Some tests failed, follow the links below.

Test history | Test log

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
39120	33840	0	24	5217	39

🟢 2025-03-24 17:26:01 UTC ydbd size 8.3 GiB changed* by -1.0 KiB, which is <= 0 Bytes vs stable-24-4-2-hotfix: OK

ydbd size dash	stable-24-4-2-hotfix: e69a90d	merge: b2bba73	diff	diff %
ydbd size	8 896 840 336 Bytes	8 896 839 288 Bytes	-1.0 KiB	-0.000%
ydbd stripped size	484 985 384 Bytes	484 985 256 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]

⚪ 2025-03-24 14:54:42 UTC Pre-commit check for b2bba73 has started.
⚪ 2025-03-24 14:57:23 UTC Build linux-x86_64-release-asan is running...
🟢 2025-03-24 15:21:02 UTC Build successful.
⚪ 2025-03-24 15:21:22 UTC Tests are running...
🔴 2025-03-24 17:23:27 UTC Some tests failed, follow the links below.

Test history | Test log

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
10446	10351	0	29	27	39

🟢 2025-03-24 17:24:16 UTC ydbd size 5.6 GiB changed* by -1.9 KiB, which is <= 0 Bytes vs stable-24-4-2-hotfix: OK

ydbd size dash	stable-24-4-2-hotfix: e69a90d	merge: b2bba73	diff	diff %
ydbd size	6 026 816 144 Bytes	6 026 814 160 Bytes	-1.9 KiB	-0.000%
ydbd stripped size	1 508 323 072 Bytes	1 508 322 176 Bytes	-896 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]

⚪ 2025-03-25 08:50:41 UTC Pre-commit check for d92fc63 has started.
⚪ 2025-03-25 08:53:19 UTC Build linux-x86_64-relwithdebinfo is running...
🟢 2025-03-25 09:34:43 UTC Build successful.
⚪ 2025-03-25 09:34:58 UTC Tests are running...
🔴 2025-03-25 11:29:11 UTC Some tests failed, follow the links below.

Test history | Test log

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
39121	33835	0	27	5220	39

🟢 2025-03-25 11:30:20 UTC ydbd size 8.3 GiB changed* by -616 Bytes, which is <= 0 Bytes vs stable-24-4-2-hotfix: OK

ydbd size dash	stable-24-4-2-hotfix: e69a90d	merge: d92fc63	diff	diff %
ydbd size	8 896 840 336 Bytes	8 896 839 720 Bytes	-616 Bytes	-0.000%
ydbd stripped size	484 985 384 Bytes	484 985 320 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}

[github-actions]

⚪ 2025-03-25 08:51:48 UTC Pre-commit check for d92fc63 has started.
⚪ 2025-03-25 08:54:31 UTC Build linux-x86_64-release-asan is running...
🟢 2025-03-25 09:21:10 UTC ydbd size 5.6 GiB changed* by -880 Bytes, which is <= 0 Bytes vs stable-24-4-2-hotfix: OK

ydbd size dash	stable-24-4-2-hotfix: e69a90d	merge: d92fc63	diff	diff %
ydbd size	6 026 816 144 Bytes	6 026 815 264 Bytes	-880 Bytes	-0.000%
ydbd stripped size	1 508 323 072 Bytes	1 508 322 368 Bytes	-704 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}