Have opt out for the ALL option on Checkboxes

[#1]

Description -

Why is this feature important to you - There are times where some options are mutually exclusive but users tend to select the ALL 

How would you like the feature to work - Add an option in the Form Fields to not allow the ALL optionto show up. By default it should show

Current Behaviour - Since introduced it is on by default on the checkbox parameter type

[#2]

For those who happen across this idea, there is an older and more established version of this idea here: <Custom Forms> Ability to Disable 'Select All' for... - Adobe Experience League Community - 523050. Go vote for that one.