Update deprecated keyboard event props

[chilled-capybara]

Fixes #696.

Typescript doesn't contain the defintions for event.key so these have been done as strings.
This could possibly be achieved by adding support in rc-util or using something like ts-key-enum.

I've updated the relevant commented-out code just to ensure the meaning isn't lost. Also, I've run prettier on the files I've worked on, the unrelated changes are in a dedicated commit.

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
picker	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Dec 12, 2023 10:41pm

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.94%. Comparing base (09b3ab1) to head (a2de18e).
⚠️ Report is 242 commits behind head on master.

Additional details and impacted files

@@ Coverage Diff @@ ## master #697 +/- ## ======================================= Coverage 98.94% 98.94% ======================================= Files 56 56 Lines 2458 2458 Branches 747 740 -7 ======================================= Hits 2432 2432 Misses 24 24 Partials 2 2 

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[afc163]

Conflicted