[OLAP] Enable projection push down by default

[denis0x0D]

Changelog entry

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Changelog category

• Not for changelog (changelog entry is not required)

Description for reviewers

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[github-actions]

🟢 2025-06-25 11:58:02 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-06-25 08:58:41 UTC Pre-commit check linux-x86_64-relwithdebinfo for fb0e0a2 has started.
⚪ 2025-06-25 08:58:45 UTC Artifacts will be uploaded here
⚪ 2025-06-25 09:02:36 UTC ya make is running...
🟡 2025-06-25 10:58:34 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?
38350	35626	0	13	2671	40

⚪ 2025-06-25 11:02:03 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-06-25 11:15:47 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?
732 (only retried tests)	643	0	8	46	35

⚪ 2025-06-25 11:15:58 UTC ya make is running... (failed tests rerun, try 3)
🟢 2025-06-25 11:28:09 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
481 (only retried tests)	449	0	0	5	27

🟢 2025-06-25 11:28:17 UTC Build successful.
🟢 2025-06-25 11:28:41 UTC ydbd size 2.2 GiB changed* by 0 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 94e006b	merge: fb0e0a2	diff	diff %
ydbd size	2 382 783 848 Bytes	2 382 783 848 Bytes	0 Bytes	0.000%
ydbd stripped size	498 851 368 Bytes	498 851 368 Bytes	0 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]

⚪ 2025-06-25 08:59:13 UTC Pre-commit check linux-x86_64-release-asan for fb0e0a2 has started.
⚪ 2025-06-25 08:59:24 UTC Artifacts will be uploaded here
⚪ 2025-06-25 09:03:10 UTC ya make is running...
🟡 2025-06-25 11:30:45 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?
16033	15640	0	110	256	27

🟢 2025-06-25 11:32:10 UTC Build successful.
🟢 2025-06-25 11:32:39 UTC ydbd size 3.9 GiB changed* by +176 Bytes, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 94e006b	merge: fb0e0a2	diff	diff %
ydbd size	4 191 905 632 Bytes	4 191 905 808 Bytes	+176 Bytes	+0.000%
ydbd stripped size	1 453 130 520 Bytes	1 453 130 712 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}