EXT-1494 Fix load actor gc spaming on finish (#24638)

[robdrynkin]

Changelog entry

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Changelog category

• New feature
• Experimental feature
• Improvement
• Performance improvement
• User Interface
• Bugfix
• Backward incompatible change
• Documentation (changelog entry is not required)
• Not for changelog (changelog entry is not required)

Description for reviewers

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[github-actions]

⚪ 2025-09-11 09:54:51 UTC Pre-commit check linux-x86_64-relwithdebinfo for db54543 has started.
⚪ 2025-09-11 09:54:59 UTC Artifacts will be uploaded here
⚪ 2025-09-11 09:57:50 UTC ya make is running...
🟡 2025-09-11 10:58:43 UTC Some tests failed, follow the links below. Going to retry failed tests...

Details

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
19016	17750	0	1	1206	59

⚪ 2025-09-11 11:00:29 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-09-11 11:26:56 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
114 (only retried tests)	57	0	0	0	57

🟢 2025-09-11 11:27:04 UTC Build successful.
🟢 2025-09-11 11:27:20 UTC ydbd size 2.1 GiB changed* by -176 Bytes, which is <= 0 Bytes vs stream-nb-25-1: OK

ydbd size dash	stream-nb-25-1: 29f6f29	merge: db54543	diff	diff %
ydbd size	2 271 304 560 Bytes	2 271 304 384 Bytes	-176 Bytes	-0.000%
ydbd stripped size	480 132 824 Bytes	480 132 760 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}

[github-actions]

⚪ 2025-09-11 09:56:13 UTC Pre-commit check linux-x86_64-release-asan for db54543 has started.
⚪ 2025-09-11 09:56:27 UTC Artifacts will be uploaded here
⚪ 2025-09-11 09:59:23 UTC ya make is running...
🟡 2025-09-11 11:23:45 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet Going to retry failed tests...

Details

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
12150	11958	0	85	71	36

⚪ 2025-09-11 11:24:53 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-09-11 11:46:46 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet Going to retry failed tests...

Details

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
252 (only retried tests)	169	0	8	42	33

⚪ 2025-09-11 11:46:56 UTC ya make is running... (failed tests rerun, try 3)
🟡 2025-09-11 12:08:23 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
112 (only retried tests)	40	0	7	33	32

🟢 2025-09-11 12:08:31 UTC Build successful.
🟢 2025-09-11 12:08:56 UTC ydbd size 3.7 GiB changed* by -528 Bytes, which is <= 0 Bytes vs stream-nb-25-1: OK

ydbd size dash	stream-nb-25-1: 29f6f29	merge: db54543	diff	diff %
ydbd size	3 952 650 432 Bytes	3 952 649 904 Bytes	-528 Bytes	-0.000%
ydbd stripped size	1 383 569 616 Bytes	1 383 569 296 Bytes	-320 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}