Filled DatabaseName in SnapshotManager when sending request to TxProxy

[n00bcracker]

Improved isolation for SnapshotManager requests

[github-actions]

🟢 2025-09-30 14:01:15 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-09-30 14:01:18 UTC Pre-commit check linux-x86_64-release-asan for 7747481 has started.
⚪ 2025-09-30 14:01:32 UTC Artifacts will be uploaded here
⚪ 2025-09-30 14:05:09 UTC ya make is running...
🟡 2025-09-30 16:18:04 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?
15358	14708	0	306	312	32

🟢 2025-09-30 16:18:09 UTC Build successful.
🟢 2025-09-30 16:18:32 UTC ydbd size 3.7 GiB changed* by +672 Bytes, which is < 100.0 KiB vs main: OK

ydbd size dash	main: e295824	merge: 7747481	diff	diff %
ydbd size	3 987 844 728 Bytes	3 987 845 400 Bytes	+672 Bytes	+0.000%
ydbd stripped size	1 486 399 968 Bytes	1 486 400 160 Bytes	+192 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]

⚪ 2025-09-30 14:02:02 UTC Pre-commit check linux-x86_64-relwithdebinfo for 7747481 has started.
⚪ 2025-09-30 14:02:17 UTC Artifacts will be uploaded here
⚪ 2025-09-30 14:05:52 UTC ya make is running...
🟡 2025-09-30 15:27:40 UTC Some tests failed, follow the links below. Going to retry failed tests...

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
30914	29397	0	1	1481	35

⚪ 2025-09-30 15:27:47 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-09-30 15:49:06 UTC Tests successful.

Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
599 (only retried tests)	471	0	0	108	20

🟢 2025-09-30 15:49:09 UTC Build successful.
🟢 2025-09-30 15:49:26 UTC ydbd size 2.2 GiB changed* by +856 Bytes, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 63eccbd	merge: 7747481	diff	diff %
ydbd size	2 397 661 768 Bytes	2 397 662 624 Bytes	+856 Bytes	+0.000%
ydbd stripped size	512 626 088 Bytes	512 626 152 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}

[nikvas0]

kqp ok