If you choose to go with a kernel older than 6.12, then yes. For later kernels it’s not needed, which is why the SUID bit on that file was removed in the first place. The less stuff runs SUID root, the better/safer.
for i in /opt/onlyoffice/desktopeditors/*/ ; do sudo chmod 755 $i ; done
It’s not really important anyway. But if you want to understand permissions — and to be honest, you should — then I would advise you to read my tutorial. 