Panel width should expand if panel title is long

[arouinfar]

Related to #223

When making the panel titles long, they seem to escape the maxWidth of the panel. I had to widen the sim window to pull these strings within view. They originally escaped the window bounds.

Affected strings: strings.moleculeShapes.control.bondingStringProperty strings.moleculeShapes.control.lonePairStringProperty strings.moleculeShapes.control.optionsStringProperty strings.moleculeShapes.control.moleculeStringProperty

It seems like the string maxWidth is based on the associated panel maxWidth, but that width is only realized if the panel contents expand.

@jonathanolson it seems like the panel should expand when the title is long, not just when the contents are long.

I'll open a side issue for the ComboBox button which is oddly stretched -- see #224

[arouinfar]

Tagging for https://github.com/phetsims/qa/issues/844 and https://github.com/phetsims/qa/issues/845.

[KatieWoe]

I noticed that this can cause the text to go out of bounds before it starts shrinking.

[samreid]

@arouinfar or @KatieWoe is this still a problem? I tried expanding the Bonding title and saw that it resized the panel:

Longer strings seemed to shrink at the appropriate point.

Please close if all is well, or specify more about how I can test and observe this.

[KatieWoe]

I still see this on master, and strings seem to also go out of bounds to the right.

[samreid]

I likely missed this since I was editing the _en translation file--so perhaps the startup string length behaves different than changing it at runtime. I'll re-self-assign.

[jonathanolson]

Handled in the above commit, closing!