Allow multiple join-broadcasts in single stage (#7556)

[ssmike]

Changelog entry

Allow multiple join-broadcasts in a single stage

Changelog category

• Bugfix

[github-actions]

⚪ 2024-08-13 10:45:38 UTC Pre-commit check for 28681fb has started.
⚪ 2024-08-13 10:48:11 UTC Build linux-x86_64-release-asan is running...
🟢 2024-08-13 11:12:05 UTC Build successful.
⚪ 2024-08-13 11:12:21 UTC Tests are running...

[github-actions]

⚪ 2024-08-13 10:46:29 UTC Pre-commit check for 28681fb has started.
⚪ 2024-08-13 10:49:03 UTC Build linux-x86_64-relwithdebinfo is running...
🟢 2024-08-13 11:26:29 UTC Build successful.
⚪ 2024-08-13 11:26:43 UTC Tests are running...
🔴 2024-08-13 12:48:37 UTC Some tests failed, follow the links below.

Test history | Test log

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
13904	12590	0	2	1301	11

🟢 2024-08-13 12:49:18 UTC ydbd size 8.1 GiB changed* by +10.0 KiB, which is < 100.0 KiB vs stable-24-3: OK

ydbd size dash	stable-24-3: 282df40	merge: 28681fb	diff	diff %
ydbd size	8 723 846 368 Bytes	8 723 856 568 Bytes	+10.0 KiB	+0.000%
ydbd stripped size	476 904 968 Bytes	476 908 680 Bytes	+3.6 KiB	+0.001%

^{*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]

⚪ 2024-08-13 10:47:15 UTC Pre-commit check for 28681fb has started.
⚪ 2024-08-13 10:49:45 UTC Build linux-x86_64-release-clang14 is running...
🟢 2024-08-13 10:55:54 UTC Build successful.