[menu-button] Initially there are no aria-details or aria-expanded attributes

[jpzwarte]

Provide a general summary of the issue here

Initially there are no aria-details or aria-expanded attributes, only after you click the button once, those attributes are added.

🤔 Expected Behavior?

The attributes should be there initially

😯 Current Behavior

💁 Possible Solution

No response

🖥️ Steps to Reproduce

What browsers are you seeing the problem on? (only for bugs in code)

Chrome

If other, please specify.

No response

What operating system are you using?

macOS

👤 Your name

Jeroen Zwartepoorte

🧢 Your product/team

SLDS

🎨 Your Theme(s)

Sanoma Learning