Frame validate geometry (origin, corner) not consistent

[dkrasner]

Main points

Due to how JS handles polymorphism and arithmetic with null/undefined values frame geometry check is inconsistent.

For example, this returns a frame:
new Frame([null, 4], [1, 20])
but this returns an error:
new Frame([1, 4], [null, 20])

We should either insist that points contain no null/undefined values or allow these frames to be created.