Tappable area check not using Apple's recommendation

[niksawtschuk]

I noticed that the minimum tappable area check was failing for elements it should be passing for, according to Apple's recommendation, which is 44pt x 44 pt.

It looks like the current default is 48pt x 48pt, which is a Material design standard. Since this is an iOS library, it makes most sense to follow Apple's rules by default.

Perhaps it would be a good idea to allow configuring rules like this one for the default checks.