Toolbar: Icon only buttons do not have aria-labels

[coliff]

Prerequisites

• I have searched for duplicate or closed issues
• I have read the contributing guidelines

Describe the issue

Screen reader issue: Buttons are announced as buttons but don't say what they are

Reduced test cases

Demo:
https://modus-web-components.trimble.com/?path=/story/components-toolbar--icon-only

Tested with NVDA for Windows

What operating system(s) are you seeing the problem on?

Windows

What browser(s) are you seeing the problem on?

Microsoft Edge

What is the issue regarding ?

@trimble-oss/modus-web-components

What version of npm package are you using ?

v.0.31.1

Priority

Medium

What product/project are you using Modus Components for ?

Modus

What is your team/division name ?

Modus

Are you willing to contribute ?

No

Are you using Modus Web Components in production ?

https://modus-web-components.trimble.com/