Concat - multibroadcast fix #19429

Job	Run time
cancel	2s
licensing	2m 20s
Check if image exists in registry	5s
linux (ubuntu-20.04, debug)	25m 47s
linux (ubuntu-20.04, release)	4m 8s
linux-fpga (ubuntu-20.04, debug)	25m 54s
linux (ubuntu-20.04, codecov)	6m 19s
pyflakes	2m 7s
Build image	0s
Build SLES image	0s
sles	2m 15s
cppcheck	44m 17s
format	4m 25s
tidy	3m 59s
	2h 1m 38s

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