Assertion failed: rightCenter should be a finite Vector2

[zepumph]

Caused from layout updates when locale changes AND phet-io fuzzing hides all checkboxes in this vertical checkbox group:

forces-and-motion-basics/js/netforce/view/NetForceControlPanel.ts

Lines 99 to 104 in 70b975e

	// Update the layout to support dynamic locale
	Multilink.multilink( [ sumOfForcesStringProperty, valuesStringProperty, speedStringProperty ], () => {
	verticalCheckboxGroupPanel.right = ForcesAndMotionBasicsLayoutBounds.width - 5;
	this.resetAllButton.rightCenter = verticalCheckboxGroupPanel.rightBottom.plusXY( -BUTTON_PADDING, 35 );
	} );

[zepumph]

To reproduce:

• FAMB is studio
• Toggle forcesAndMotionBasics.netForceScreen.view.controlPanel.verticalCheckboxGroup.visibleProperty to false
• Change the locale.

This doesn't happen on any other screens. Multilink was added in c69d3fd

[zepumph]

This is not really too good of a solution, but the layout code to begin with isn't really that great either. Some thoughts on this block:

1. We don't listen to bounds, only the string itself, so many other items could effect the panel (hiding one checkbox with PhET-iO) and this wouldn't re-layout
2. I'm concerned that this is a different chunk of code than other screens. Likely the resetAllButton should be positioned in the same way on all screens since it is pretty much in the same spot.
3. This sim isn't in active development, so I'm not trying to spend too much time here. I wrote out a TODO to this issue, so hopefully it can get tackled next time dynamic locale is tackled + phet-io for this sim.

[zepumph]

Tagging https://github.com/phetsims/phet-io/issues/2003