add viewer healthcheck path (#11019) - merge stable-24-3

[StekPerepolnen]

Changelog entry

#11020
Return /healthcheck handler for backward compatibility

[github-actions]

⚪ 2024-10-29 11:29:46 UTC Pre-commit check for 70a133e has started.
⚪ 2024-10-29 11:32:20 UTC Build linux-x86_64-relwithdebinfo is running...
🟢 2024-10-29 12:10:45 UTC Build successful.
⚪ 2024-10-29 12:11:03 UTC Tests are running...
🔴 2024-10-29 13:36:46 UTC Some tests failed, follow the links below.

Test history | Test log

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
14236	12883	0	13	1300	40

🟡 2024-10-29 13:37:33 UTC ydbd size 8.2 GiB changed* by +294.0 KiB, which is >= 100.0 KiB vs stable-24-3: Warning

ydbd size dash	stable-24-3: ccf6536	merge: 70a133e	diff	diff %
ydbd size	8 855 610 904 Bytes	8 855 911 960 Bytes	+294.0 KiB	+0.003%
ydbd stripped size	483 568 488 Bytes	483 568 680 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]

⚪ 2024-10-29 11:32:19 UTC Pre-commit check for 70a133e has started.
⚪ 2024-10-29 11:35:23 UTC Build linux-x86_64-release-asan is running...
🟢 2024-10-29 11:57:00 UTC Build successful.
⚪ 2024-10-29 11:57:18 UTC Tests are running...
🔴 2024-10-29 14:12:31 UTC Some tests failed, follow the links below.

Test history | Test log

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
10082	9979	0	28	25	50

🟡 2024-10-29 14:13:19 UTC ydbd size 5.6 GiB changed* by +138.3 KiB, which is >= 100.0 KiB vs stable-24-3: Warning

ydbd size dash	stable-24-3: ccf6536	merge: 70a133e	diff	diff %
ydbd size	5 989 519 536 Bytes	5 989 661 152 Bytes	+138.3 KiB	+0.002%
ydbd stripped size	1 501 276 256 Bytes	1 501 283 936 Bytes	+7.5 KiB	+0.001%

^{*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]

⚪ 2024-10-29 11:32:25 UTC Pre-commit check for 70a133e has started.
⚪ 2024-10-29 11:35:37 UTC Build linux-x86_64-release-clang14 is running...
🟢 2024-10-29 11:41:47 UTC Build successful.