Remove defaultProps from Page component (enables auto-incrementing page name)

[jaridmargolin]

Problem

The default name prop on the Page component provides no value. It in-fact has negative consequences. If we create multiple pages with no specified name, they will all default to Page 1. If instead we let the name remain undefined, Sketch will create the page using an auto-incremented name (Page 1, Page 2, Page 3, etc...)

Solution

Remove the defaultProps.name definition :)

Implementation Notes

This is a larger concern than just this particular PR, but I don't see where or how I can create tests to confirm functionality that involves Sketch's behavior (in this case, the behavior of document.addBlankPage). I was able to manually test this by opening sketch and rendering multiple Page components without specifying the name.

[mathieudutour]

where or how I can create tests to confirm functionality that involves Sketch's behavior

I don't think there is a way to do it now but if you want to look at it, have a look at https://github.com/skpm/skpm/tree/master/packages/test-runner