VSlider has incorrect defaults for track size and knob dimensions

[samreid]

Discovered in https://github.com/phetsims/bamboo/issues/50, if you create a default VSlider with default trackSize and thumbSize, the sliders look like this, but drag up and down:

So perhaps VSlider should use different defaults, like this (but with factored out constants):

    options = merge( {
      orientation: Orientation.VERTICAL,
      trackSize: new Dimension2( 5, 100 ),
      thumbSize: new Dimension2( 34, 17 )
    }, options );

Or perhaps if Slider detects orientation: Orientation.HORIZONTAL, it should swap widths and heights. Assigning @pixelzoom since this issue may be related to https://github.com/phetsims/sun/issues/380

[pixelzoom]

Looks like this problem was introduced in https://github.com/phetsims/sun/commit/53706aa5fef79d0805840dbd7e4a04b3a555ef9e for https://github.com/phetsims/sun/issues/733. I'll check it out.

[pixelzoom]

The problem is present in usages of VSlider that do not specify both options trackSize and thumbSize.

These uses specify both trackSize and thumbSize and do not exhibit this problem:

• [x] capacitor-lab-basics BatteryNode
• [x] color-vision RGBSlider
• [x] curve-fitting CoefficientSliderNode
• [x] graphing-quadratics GQSlider
• [x] gravity-and-orbits ZoomControl
• [x] greenhouse-effect ConcentrationControlPanel
• [x] least-squares-regression MyLineControlPanel
• [x] molarity VerticalSlider
• [x] neuron ZoomControl
• [x] normal-modes NormalModeSpectrumAccordionBox
• [x] ohms-law SliderUnit
• [x] resistance-in-a-wire SliderUnit
• [x] scenery-phet HeaterCoolerFront (e.g. energy-forms-and-changes, gas-properties)

These uses do NOT specify both trackSize and thumbSize, and do exhibit this problem:

• [x] energy-forms-and-changes SunNode (incorrect track and thumb)
• [x] griddle GriddleDemoScreenView (incorrect thumb)
• [x] scenery-phet ComponentsScreenView (incorrect track and thumb)
• [x] sun ComponentsScreenView (incorrect thumb)

[pixelzoom]

Fixed in the above commits. Tested all sims listed in https://github.com/phetsims/sun/issues/733#issuecomment-1009379945, as well as a random sampling of HSliders.

Back to @samreid for review.

[samreid]

The changes seem good, thanks! Closing.