Kinetic Energy occluded by Values in 1D

[arouinfar]

For https://github.com/phetsims/QA/issues/537

When the mass is large, the momentum value can occlude the Kinetic Energy readout in 1D.

Increasing the height of the play area by 0.1 almost entirely removes the occlusion, and doesn't seem to disturb the layout elsewhere.

There is still a very slight overlap. This could be removed entirely by instead increasing the height by 0.2, but I think that makes the play area a bit too tall for the 1D screens. Instead, it would be preferable to bump the Kinetic Energy readout down just a bit.

@jonathanolson please make the following changes:

• [x] Increase PLAY_AREA_1D_HEIGHT to 1.1
• [ ] Move KineticEnergyNumberDisplay down 2 px

[jonathanolson]

Both should be done, can you verify that this looks as desired?

[arouinfar]

Looks good, thanks @jonathanolson!