Added grpc sensor for empty database name in requests (#29619)

[n00bcracker]

Changelog entry

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Changelog category

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Description for reviewers

CherryPick #29619

[github-actions]

🟢 2025-12-04 11:33:26 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-12-04 11:34:01 UTC Pre-commit check linux-x86_64-release-asan for fafd384 has started.
⚪ 2025-12-04 11:35:11 UTC Artifacts will be uploaded here
⚪ 2025-12-04 11:39:44 UTC ya make is running...
🟡 2025-12-04 14:03:49 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?
17939	17391	0	194	335	19

🟢 2025-12-04 14:05:11 UTC Build successful.
🟢 2025-12-04 14:05:46 UTC ydbd size 3.8 GiB changed* by +9.5 KiB, which is < 100.0 KiB vs stable-25-3: OK

ydbd size dash	stable-25-3: 31b6296	merge: fafd384	diff	diff %
ydbd size	4 066 591 232 Bytes	4 066 600 936 Bytes	+9.5 KiB	+0.000%
ydbd stripped size	1 514 996 352 Bytes	1 514 999 648 Bytes	+3.2 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]

⚪ 2025-12-04 11:35:58 UTC Pre-commit check linux-x86_64-relwithdebinfo for fafd384 has started.
⚪ 2025-12-04 11:36:35 UTC Artifacts will be uploaded here
⚪ 2025-12-04 11:41:17 UTC ya make is running...
🟡 2025-12-04 13:28:36 UTC Some tests failed, follow the links below. Going to retry failed tests...

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
40826	38152	0	9	2649	16

⚪ 2025-12-04 13:31:55 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-12-04 13:49:35 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?
578 (only retried tests)	556	0	3	1	18

⚪ 2025-12-04 13:49:45 UTC ya make is running... (failed tests rerun, try 3)
🟢 2025-12-04 14:03:48 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
562 (only retried tests)	551	0	0	0	11

🟢 2025-12-04 14:03:57 UTC Build successful.
🟢 2025-12-04 14:04:17 UTC ydbd size 2.3 GiB changed* by +7.3 KiB, which is < 100.0 KiB vs stable-25-3: OK

ydbd size dash	stable-25-3: 31b6296	merge: fafd384	diff	diff %
ydbd size	2 443 329 224 Bytes	2 443 336 680 Bytes	+7.3 KiB	+0.000%
ydbd stripped size	522 925 480 Bytes	522 927 208 Bytes	+1.7 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}