try to add blocks before peephole in blockhashjoin

[lll-phill-lll]

Changelog entry

...

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

...

[github-actions]

🟢 2025-07-14 11:10:34 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-07-14 11:11:24 UTC Pre-commit check linux-x86_64-relwithdebinfo for b460f5c has started.
⚪ 2025-07-14 11:11:37 UTC Artifacts will be uploaded here
⚪ 2025-07-14 11:14:50 UTC ya make is running...
🟡 2025-07-14 12:36:00 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?
36937	34187	0	5	2700	45

⚪ 2025-07-14 12:39:32 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-07-14 13:02:28 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?
392 (only retried tests)	354	0	1	3	34

⚪ 2025-07-14 13:02:40 UTC ya make is running... (failed tests rerun, try 3)
🔴 2025-07-14 13:24:45 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?
229 (only retried tests)	195	0	1	0	33

🟢 2025-07-14 13:24:55 UTC Build successful.
🟢 2025-07-14 13:25:18 UTC ydbd size 2.2 GiB changed* by -119.8 KiB, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 382b4f2	merge: b460f5c	diff	diff %
ydbd size	2 390 421 704 Bytes	2 390 299 040 Bytes	-119.8 KiB	-0.005%
ydbd stripped size	500 689 000 Bytes	500 662 824 Bytes	-25.6 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]

⚪ 2025-07-14 11:11:24 UTC Pre-commit check linux-x86_64-release-asan for b460f5c has started.
⚪ 2025-07-14 11:11:37 UTC Artifacts will be uploaded here
⚪ 2025-07-14 11:14:58 UTC ya make is running...
🟡 2025-07-14 13:13:00 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?
14520	13950	0	337	208	25

🟢 2025-07-14 13:14:27 UTC Build successful.