select: toggle and option target sizes

[nikkimk]

Description of the issue

Select target sizes should be a 24px minimum, or WCAG 2.2 2.5.8 AA compliant.

Impacted component(s)

• pf-select
• pf-option

Steps to reproduce

1. Go to select documentation
2. Inspect the toggle button.
3. Inspect the options.
4. Inspect the typeahead text field.

Expected behavior

Minimum width and height should be 24px.