[lexical-table][lexical-utils][lexical-react]: Bug Fix: Enforce table integrity with transforms and move non-React plugin code to @lexical/table

[etrepum]

Description

• Enforce Table invariants with node transforms that are registered by the table plugin
• Move the majority of the Table plugin's code to @lexical/table so that it can be more easily used in non-React applications
• Add a new $unwrapAndFilterDescendants to @lexical/utils for use in these transforms (it's possibly useful elsewhere that we have a fixed schema, like ListNode/ListItemNode)

New Import & Transform Invariants:

TableNode

• may only have TableRowNode children

TableRowNode

• must have a TableNode parent
• may only have TableCellNode children

TableCellNode

• must have a TableRowNode parent,
• must be non-empty (an empty ParagraphNode will be added)

Closes #6910

Test plan

Before

Playground crash when pasting a table that has tbody, thead, tfoot, or and/or caption

After

No crash, new unit tests for new functionality, specifically testing that the import behaves as expected

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
lexical	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Dec 6, 2024 4:53am
lexical-playground	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Dec 6, 2024 4:53am

[github-actions]

size-limit report 📦

Path	Size
lexical - cjs	31.07 KB (0%)
lexical - esm	30.92 KB (0%)
@lexical/rich-text - cjs	39.89 KB (0%)
@lexical/rich-text - esm	32.75 KB (0%)
@lexical/plain-text - cjs	38.46 KB (0%)
@lexical/plain-text - esm	30.08 KB (0%)
@lexical/react - cjs	41.79 KB (0%)
@lexical/react - esm	34.15 KB (0%)

[ivailop7]

Fantastic refactor!