Ensure all components have types and an index.ts

[tay1orjones]

This includes CopyButton, MultiSelect, PasswordInput, TileGroup, among others.

if there are any outstanding, make tasklist/issue items in the parent issue #16360

[ariellalgilmore]

I came up with the following list of components missing types and index.ts files. Not sure if all apply, so wanted to double check before adding to the parent issue

• Checkbox group (missing index.ts)
• Context menu
• Disclosure
• Feature flags
• idPrefix
• inlineCheckbox
• LayoutDirection
• Portal
• ToggleSmall