Implement display of s3 configuration in mon page

[kruall]

Changelog entry

Implemented display of complete S3 configuration parameters in the monitoring interface.

Changelog category

• Improvement

Description for reviewers

#22764

[Copilot]

Pull Request Overview

This PR adds S3 configuration display functionality to the blob depot monitoring interface, allowing administrators to view complete S3 backend settings through the web UI.

Key Changes:

• Added a new "S3" tab to the monitoring data interface
• Implemented comprehensive S3 settings display with sensitive data masking
• Added support for both sync and async mode configuration viewing

---

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[github-actions]

⚪ 2025-10-27 12:57:11 UTC Pre-commit check linux-x86_64-release-asan for f692601 has started.
⚪ 2025-10-27 12:57:16 UTC Artifacts will be uploaded here
⚪ 2025-10-27 12:58:44 UTC ya make is running...
🟡 2025-10-27 15:04:01 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?
15723	15127	0	299	274	23

🟢 2025-10-27 15:04:09 UTC Build successful.
🟡 2025-10-27 15:04:35 UTC ydbd size 3.8 GiB changed* by +100.9 KiB, which is >= 100.0 KiB vs main: Warning

ydbd size dash	main: bfc5f0e	merge: f692601	diff	diff %
ydbd size	4 060 467 336 Bytes	4 060 570 664 Bytes	+100.9 KiB	+0.003%
ydbd stripped size	1 508 594 496 Bytes	1 508 633 632 Bytes	+38.2 KiB	+0.003%

^{*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]

⚪ 2025-10-27 12:58:26 UTC Pre-commit check linux-x86_64-relwithdebinfo for f692601 has started.
⚪ 2025-10-27 12:58:58 UTC Artifacts will be uploaded here
⚪ 2025-10-27 13:00:50 UTC ya make is running...
🟡 2025-10-27 14:31:21 UTC Some tests failed, follow the links below. Going to retry failed tests...

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
39285	36439	0	7	2812	27

⚪ 2025-10-27 14:31:33 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-10-27 14:45:38 UTC Tests successful.

Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
895 (only retried tests)	871	0	0	1	23

🟢 2025-10-27 14:45:41 UTC Build successful.
🟢 2025-10-27 14:45:59 UTC ydbd size 2.3 GiB changed* by +71.3 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: bfc5f0e	merge: f692601	diff	diff %
ydbd size	2 439 891 816 Bytes	2 439 964 784 Bytes	+71.3 KiB	+0.003%
ydbd stripped size	518 917 000 Bytes	518 937 512 Bytes	+20.0 KiB	+0.004%

^{*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]

🟢 2025-10-27 12:59:19 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-10-28 13:43:37 UTC Pre-commit check linux-x86_64-release-asan for fec8e3e has started.
⚪ 2025-10-28 13:43:55 UTC Artifacts will be uploaded here
⚪ 2025-10-28 13:45:16 UTC ya make is running...
⚫ 2025-10-28 13:50:56 UTC Check cancelled

[github-actions]

⚫ 2025-10-28 14:31:35 UTC Check cancelled

[github-actions]

⚪ 2025-10-28 14:34:32 UTC Pre-commit check linux-x86_64-relwithdebinfo for 1548930 has started.
⚪ 2025-10-28 14:34:50 UTC Artifacts will be uploaded here
⚪ 2025-10-28 14:36:15 UTC ya make is running...
⚫ 2025-10-28 14:36:34 UTC Check cancelled

[github-actions]

⚪ 2025-10-28 14:38:44 UTC Pre-commit check linux-x86_64-relwithdebinfo for c17837d has started.
⚪ 2025-10-28 14:39:03 UTC Artifacts will be uploaded here
⚪ 2025-10-28 14:40:32 UTC ya make is running...
🔴 2025-10-28 14:43:14 UTC Build failed, see the logs. Also see fail summary

[github-actions]

⚪ 2025-10-28 15:00:28 UTC Pre-commit check linux-x86_64-release-asan for c17837d has started.
⚪ 2025-10-28 15:00:48 UTC Artifacts will be uploaded here
⚪ 2025-10-28 15:02:19 UTC ya make is running...
🔴 2025-10-28 15:05:10 UTC Build failed, see the logs. Also see fail summary