fix TabletsTotal counter (#6492)

[vporyadke]

Changelog entry

fix a bug where tablets total counter was not updated on followers deletion

Changelog category

• Bugfix

Additional information

backport of #6492

[github-actions]

⚪ 2024-07-16 07:27:26 UTC Pre-commit check for 3829b62 has started.
⚪ 2024-07-16 07:29:52 UTC Build linux-x86_64-release-clang14 is running...
🟢 2024-07-16 08:02:51 UTC Build successful.

[github-actions]

⚪ 2024-07-16 07:27:53 UTC Pre-commit check for 3829b62 has started.
⚪ 2024-07-16 07:30:27 UTC Build linux-x86_64-release-asan is running...
🟢 2024-07-16 07:53:14 UTC Build successful.
⚪ 2024-07-16 07:53:28 UTC Tests are running...
🔴 2024-07-16 09:50:40 UTC Some tests failed, follow the links below.

Test history | Test log

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
9817	9244	0	82	317	174

🟢 2024-07-16 09:51:31 UTC ydbd size 5.2 GiB changed* by +752 Bytes, which is < 100.0 KiB vs stable-24-3: OK

ydbd size dash	stable-24-3: 14c79b8	merge: 3829b62	diff	diff %
ydbd size	5 616 609 688 Bytes	5 616 610 440 Bytes	+752 Bytes	+0.000%
ydbd stripped size	1 211 261 800 Bytes	1 211 261 992 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]

⚪ 2024-07-16 07:28:03 UTC Pre-commit check for 3829b62 has started.
⚪ 2024-07-16 07:30:34 UTC Build linux-x86_64-relwithdebinfo is running...
🟢 2024-07-16 08:07:07 UTC Build successful.
⚪ 2024-07-16 08:07:21 UTC Tests are running...
🔴 2024-07-16 09:28:42 UTC Some tests failed, follow the links below.

Test history | Test log

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
14090	12768	0	1	1308	13

🟢 2024-07-16 09:29:23 UTC ydbd size 8.1 GiB changed* by +944 Bytes, which is < 100.0 KiB vs stable-24-3: OK

ydbd size dash	stable-24-3: 14c79b8	merge: 3829b62	diff	diff %
ydbd size	8 727 365 536 Bytes	8 727 366 480 Bytes	+944 Bytes	+0.000%
ydbd stripped size	477 191 496 Bytes	477 191 624 Bytes	+128 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}