Update Size Prop across components

[tw15egan]

We want to align all size props so that a user knows exactly what size to expect based on the value they provide.

Based on the following table:

Name	Size
xs	24
sm	32
md	40
lg	48
xl	64
2xl	80

Components to be updated

• Accordion
• Button
• Listbox
  • Combobox
  • Dropdown
  • Multiselect
  • Filterable Multiselect
• Content Switcher
• DatePicker
• FileUploader
  • FileUploaderButton
  • FileUploaderDropContainer
  • FileUploaderItem
• Link
• Modal
  • ComposedModal
• Number Input
• Overflow Menu
• Search
• Select
• Tag
• Text Input
• Time Picker
• Toggle

Form elements have been worked on in #8160

Outstanding work is tracked in #8369