Keyboard shortcuts only display in toolbar after a character is typed

[nicolecpeoples]

Keyboard shortcuts are not selecting in the toolbar until after user has typed a new character. Users expect the formatting to be visibly active as soon as they apply it and this can be an issue for keyboard-first users who rely on immediate visual feedback to understand the functionality of the editor.

Steps for Reproduction

1. Load the editor in any browser.
2. Use any keyboard shortcut, for example bold or italics. Ctrl + B or Ctrl + I
3. Type characters into quill

Expected behavior:
When using the keyboard shortcut, the style should select.

Actual behavior: The Toolbar is not showing the style as selected until user types in a new character.

Platforms: All browsers

Version: 2.0.3