getWrap behaviour change in v4

[JoelBrenstrum]

In this change 481b536#diff-787134450138de88787ea4fed051cb798a2e3a5816955746ab7730617ae6d6e3R11

getWrap inside getWrap.ts was slightly altered resulting in different behaviour.

Now when passing an undefined wrap prop it is treated as wrap=false

Repro
4.3.2 new behaviour

3.4.5 old bheaviour

You can see when comparing 3.4.5 and 4.3.2 the behaviour has changed