Collapsible: modify typo in _setOption

Note: Commit message edited by Gabriel Schulhof <gabriel.schulhof@intel.com>

Fixes gh-7054
Collapsible: Store rendered options and update them as they change

Fixes gh-7044
Collapsibleset: Make sure style options are inherited
Collapsible: Make sure cue text is set during expand/collapse

Re gh-7054