Add EnablePgSyntax flag (#8765)

[gridnevvvit]

Changelog entry

Add EnablePgSyntax flag (#8765)

Changelog category

• Not for changelog (changelog entry is not required)

Additional information

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[github-actions]

⚪ 2024-09-05 11:42:30 UTC Pre-commit check for 480d1bb has started.
⚪ 2024-09-05 11:46:01 UTC Build linux-x86_64-release-asan is running...
🟢 2024-09-05 12:32:50 UTC Build successful.
⚪ 2024-09-05 12:33:03 UTC Tests are running...
🔴 2024-09-05 14:53:53 UTC Some tests failed, follow the links below.

Test history | Test log

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
13820	13707	0	42	53	18

🟢 2024-09-05 14:54:49 UTC ydbd size 5.6 GiB changed* by +26.3 KiB, which is < 100.0 KiB vs stable-24-3-7-hotfix: OK

ydbd size dash	stable-24-3-7-hotfix: f51926b	merge: 480d1bb	diff	diff %
ydbd size	6 008 524 096 Bytes	6 008 550 992 Bytes	+26.3 KiB	+0.000%
ydbd stripped size	1 493 688 416 Bytes	1 493 692 512 Bytes	+4.0 KiB	+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}