Make NOT_SYNCHRONIZED_1 internal state treated as DISCONNECTED

[alexvru]

Changelog entry

Make NOT_SYNCHRONIZED_1 internal state treated as DISCONNECTED

Changelog category

• Not for changelog (changelog entry is not required)

Description for reviewers

This fixes a bug when state storage and boards treat NOT_SYNCHRONIZED_1 state as NOT_SYNCHRONIZED thus leading to impossibility to work then only part of unsynced pile is available.

[github-actions]

🟢 2025-09-08 06:48:36 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-09-08 08:07:32 UTC Pre-commit check linux-x86_64-release-asan for 9a17f73 has started.
⚪ 2025-09-08 08:07:36 UTC Artifacts will be uploaded here
⚪ 2025-09-08 08:10:55 UTC ya make is running...
🟡 2025-09-08 10:16:22 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
15469	14999	0	133	310	27

🟢 2025-09-08 10:17:41 UTC Build successful.
🟡 2025-09-08 10:18:03 UTC ydbd size 4.0 GiB changed* by +149.2 KiB, which is >= 100.0 KiB vs main: Warning

ydbd size dash	main: 2f955be	merge: 9a17f73	diff	diff %
ydbd size	4 294 917 536 Bytes	4 295 070 344 Bytes	+149.2 KiB	+0.004%
ydbd stripped size	1 488 922 776 Bytes	1 488 991 928 Bytes	+67.5 KiB	+0.005%

^{*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]

⚪ 2025-09-08 08:07:37 UTC Pre-commit check linux-x86_64-relwithdebinfo for 9a17f73 has started.
⚪ 2025-09-08 08:07:52 UTC Artifacts will be uploaded here
⚪ 2025-09-08 08:11:10 UTC ya make is running...
🟡 2025-09-08 09:23:28 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?
31111	29703	0	1	1371	36

⚪ 2025-09-08 09:26:03 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-09-08 09:40:56 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
756 (only retried tests)	732	0	0	0	24

🟢 2025-09-08 09:41:06 UTC Build successful.
🟢 2025-09-08 09:41:23 UTC ydbd size 2.3 GiB changed* by +55.3 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 2f955be	merge: 9a17f73	diff	diff %
ydbd size	2 443 672 504 Bytes	2 443 729 104 Bytes	+55.3 KiB	+0.002%
ydbd stripped size	511 587 976 Bytes	511 599 560 Bytes	+11.3 KiB	+0.002%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}