[table] feat: add Table2 and EditableCell2, use new hotkeys API

[adidahiya]

Fixes #4789

Checklist

• Includes tests
• Update documentation

Changes proposed in this pull request:

• Abstract out hotkeys interaction logic from Table into a plain class (not a React component) called TableHotkeys
  • We instantiate this class in the Table constructor, and keep it up to date with Table props, state, and its Grid as necessary
• Create a new component, <Table2>, which copies much of its implementation from Table, but has the enhancement of using <HotkeysTarget2> instead of @HotkeysTarget
  • This new component requires that you configure your application with a <HotkeysProvider> somewhere.
• Create a new compoennt, <EditableCell2>, which copies much of its implementation from EditableCell, but has the enhancement of using <HotkeysTarget2> instead of @HotkeysTarget
• Use Table2 and EditableCell2 in all the docs-app examples

Note that #4789 contains some discussion of the tradeoffs of alternative solutions to the problem.

Reviewers should focus on:

• All the docs examples should work with no regressions

Screenshot

[blueprint-bot]

DRY more table code, add tests

Previews: documentation | landing | table

[blueprint-bot]

skip bad tests

Previews: documentation | landing | table

[blueprint-bot]

[v4] fix(useHotkeys): make hook compatible with SSR

Previews: documentation | landing | table

[blueprint-bot]

add tabIndex

Previews: documentation | landing | table

[adidahiya]

note: these tests should get fixed in a future PR