showDetails toolbar button can be in wrong state after initialization

[Toutouwai]

It seems that the showDetails button is always in the active state by default, even when json-viewer is initialized with show-data-types="false" and show-size="false". In that scenario the button then requires two clicks before it has the expected toggling effect.

[andypf]

Thank you for reporting this issue. I will check it and work on a fix.