Fix busywait on adding to full async input buffer

[yumkam]

DoExecute->PollAsyncInput->source.PollAsyncInput->ContinueExecution->DoExecute...

Changelog entry

...

Changelog category

• Bugfix
• Not for changelog (changelog entry is not required)

Additional information

Somewhat reverts YQ-1612, needs careful checks/review
...

[github-actions]

⚪ 2025-02-13 10:06:06 UTC Pre-commit check linux-x86_64-release-asan for abd1799 has started.
⚪ 2025-02-13 10:06:17 UTC Artifacts will be uploaded here
⚪ 2025-02-13 10:09:06 UTC ya make is running...
🟡 2025-02-13 11:43:52 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet Going to retry failed tests...

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
11645	11562	0	34	13	36

⚪ 2025-02-13 11:44:56 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-02-13 12:06:25 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet Going to retry failed tests...

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
130 (only retried tests)	92	0	1	4	33

⚪ 2025-02-13 12:06:34 UTC ya make is running... (failed tests rerun, try 3)
🟡 2025-02-13 12:18:35 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?
68 (only retried tests)	31	0	1	2	34

🟢 2025-02-13 12:18:42 UTC Build successful.
🟢 2025-02-13 12:19:11 UTC ydbd size 3.6 GiB changed* by -176 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 749f7cd	merge: abd1799	diff	diff %
ydbd size	3 878 463 792 Bytes	3 878 463 616 Bytes	-176 Bytes	-0.000%
ydbd stripped size	1 358 247 648 Bytes	1 358 247 584 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]

⚪ 2025-02-13 10:06:30 UTC Pre-commit check linux-x86_64-relwithdebinfo for abd1799 has started.
⚪ 2025-02-13 10:06:42 UTC Artifacts will be uploaded here
⚪ 2025-02-13 10:09:34 UTC ya make is running...
🟡 2025-02-13 11:08:57 UTC Some tests failed, follow the links below. Going to retry failed tests...

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
25801	23197	0	6	2467	131

⚪ 2025-02-13 11:11:19 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-02-13 11:28:37 UTC Some tests failed, follow the links below. Going to retry failed tests...

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
218 (only retried tests)	85	0	3	2	128

⚪ 2025-02-13 11:28:45 UTC ya make is running... (failed tests rerun, try 3)
🔴 2025-02-13 11:43:46 UTC Some tests failed, follow the links below.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
197 (only retried tests)	70	0	2	0	125

🟢 2025-02-13 11:43:52 UTC Build successful.
🟢 2025-02-13 11:44:15 UTC ydbd size 2.1 GiB changed* by -2.2 KiB, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 749f7cd	merge: abd1799	diff	diff %
ydbd size	2 230 113 376 Bytes	2 230 111 120 Bytes	-2.2 KiB	-0.000%
ydbd stripped size	473 416 696 Bytes	473 416 568 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}