24-4-4-hotfix: ReadTable and ReadRows RPC fixes (#15721, #15850)

[lex007in]

Changelog entry

• Fixed a bug in YDB UUID column handling in ReadTable RPC method bug: ReadTable with UUID column #15697
• Fixed a bug in optional columns handling in ReadRows RPC method bug: ReadRows kills ydb-local #15701

Changelog category

• Bugfix

Description for reviewers

Already merged in 25-1 (#16799)

• Datahard: fix UUID type conversion in ReadTable #15721
• Fix optional columns handling in read_rows rpc #15850 -- this commit changes current ReadRows behavior (more in description in bug: ReadRows kills ydb-local #15701)

[github-actions]

⚪ 2025-05-19 17:42:02 UTC Pre-commit check for de059c7 has started.
⚪ 2025-05-19 17:44:44 UTC Build linux-x86_64-relwithdebinfo is running...
🟢 2025-05-19 18:25:00 UTC Build successful.
⚪ 2025-05-19 18:25:21 UTC Tests are running...
🔴 2025-05-19 19:55:21 UTC Some tests failed, follow the links below.

Test history | Test log

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
14824	13463	0	21	1302	38

🟢 2025-05-19 19:56:22 UTC ydbd size 8.3 GiB changed* by +12.3 KiB, which is < 100.0 KiB vs stable-24-4-4-hotfix: OK

ydbd size dash	stable-24-4-4-hotfix: 80b03af	merge: de059c7	diff	diff %
ydbd size	8 899 001 824 Bytes	8 899 014 464 Bytes	+12.3 KiB	+0.000%
ydbd stripped size	485 049 736 Bytes	485 050 760 Bytes	+1.0 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]

⚪ 2025-05-19 14:40:53 UTC Pre-commit check for de059c7 has started.
⚪ 2025-05-19 14:43:41 UTC Build linux-x86_64-release-asan is running...
🟢 2025-05-19 15:07:35 UTC Build successful.
⚪ 2025-05-19 15:07:58 UTC Tests are running...
🔴 2025-05-19 17:18:53 UTC Some tests failed, follow the links below.

Test history | Test log

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
10395	10273	0	44	38	40

🟢 2025-05-19 17:19:35 UTC ydbd size 5.6 GiB changed* by +14.7 KiB, which is < 100.0 KiB vs stable-24-4-4-hotfix: OK

ydbd size dash	stable-24-4-4-hotfix: 80b03af	merge: de059c7	diff	diff %
ydbd size	6 028 282 848 Bytes	6 028 297 920 Bytes	+14.7 KiB	+0.000%
ydbd stripped size	1 508 571 456 Bytes	1 508 576 000 Bytes	+4.4 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}