I don't recall ever seeing Galaxy Labs on my S7 but I do still see Quick Dial in the settings after that update.
Settings > Advanced Features > Quick Dial
Not sure. You may have to try asking Samsung support. It's on my Telus S7 so in theory it should be on yours.
Just to make sure we're running the same version of everything: Settings > About Phone > Software Information
Does your phone match the following:
Android Version 8.0.0 Baseband Version G930W8VLU3CRE3 Kernel version 3.18.14-13597454-QB18237167
The S7 you have, that was also purchased through Telus right?
Weird. Not sure why I have Quick Dial in my settings and you don't. Only thing I can think of is contact Samsung support and see if they have an idea. I can't figure out how one device has the option and another doesn't when we're both running the same software.
Try: https://www.samsung.com/ca/support/model/SM-G930WZKAXAC - Support options are at the bottom.