[lexical-table][lexical-playground] Breaking change: Move hasFitNestedTables logic to Playground plugin

[randal-atticus]

Breaking Change

The hasFitNestedTables option in TablePlugin introduced in v0.41.0 (#8097) has been moved to an independent playground plugin due to edge cases and its experimental state.

Description

The recently implemented hasFitNestedTables in #8097 works in the general case (i.e. in Playground) however after attempting to use it as-is in our application I discovered some application-specific edge cases or gaps, such as:

• Handling tables changing style, e.g. padding, therefore requiring a "remeasure and resize". markDirty works to force the MutationListener to run but is a hack, but what I really wanted to do was to explicitly re-run the resizing logic, which I couldn't do.
• Table margins (horizontal spacing around the table) was not considered in measurement.
• When the editor itself changes width, top-level tables are not resized and a remeasure is needed. Once again, markDirty worked as a hack.
• Didn't quite work with how we implement zoom
• It would be nice to extend this feature to other resizable elements, such as Images.

With the gaps listed above, and how new this feature is (I bet no one else is using it), I think it's a good time to cut losses and move the plugin to Playground. However, TableNode.scaleDOMColWidths can/should stay in lexical-table.

Test plan

Before

N/A

After

Feature still works as expected (there is also an E2E test checking hasFitNestedTables and is unchanged in this PR)

Screen.Recording.2026-03-11.at.9.36.31.pm.mov

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Project	Deployment	Actions	Updated (UTC)
lexical	Ready	Preview, Comment	Mar 11, 2026 10:47am
lexical-playground	Ready	Preview, Comment	Mar 11, 2026 10:47am