Fixes https://github.com/payloadcms/payload/issues/8036
This PR upgrades lexical from 0.20.0 to 0.21.0. As stated in the docs,
please ensure you're using our re-exported lexical packages instead of
installing lexical directly. E.g., import from
`@payloadcms/richtext-lexical/lexical` instead of `lexical`. Direct
lexical imports are not supported and may break.
This PR ports over all relevant PRs from the lexical playground that
have been pushed between 0.20.0 and 0.21.0. This includes a lot of bug
fixes related to tables, specifically scrollable tables and table
selection.
04733f0db1