ATTO add visual indication to alignment buttons when content is selected

"Text align right" and "Text align left" alignment buttons should have some visual indication (maybe emphasized) when user select some text, a paragraph or just click inside a piece of content.

To indicate the selected content's alignment. (similar to the way we see the "bold" or the "directionality" buttons change in visual appearance when a user click inside a paragraph or select some text that has "bold" style or "directionality" set to LTR or RTL)

Seem like a regression, considering the old TinyMCE and other relevant button behaviour in current Atto editor.