[Feature Request] Add a role='button' attribute to the theme selector drop down

[ehakram]

Is your feature request related to a problem? Please describe.
When running docfx generated websites through PageSpeed Insights, I get the following: "[aria-] attributes do not match their roles."
For more context: https://dequeuniversity.com/rules/axe/4.7/aria-allowed-attr

Describe the solution you'd like
Probably: replace line 40 from docfx/templates/modern/src/theme.ts with the following:

Notice that role='button' was added.

Thank you.

[yufeih]

Thank you @ehakram for reporting. Would you like to send a pull request?

[ehakram]

I'd be happy to, but given my limited expertise in web development, setting up a local testing environment for my changes will require me a substantial amount of time. My apologies.