Bug: [lexical-y] A command an update listener dispatches on the commit of a local update a remote change was applied inside is not stored #9805

@lexical/y: an app's update listener, registered after the binding, that dispatches a command editing the document on the commit of a local update a provider applied a remote change inside (D108 defers that change's read) has its edit shown but never stored: the editor shows two# while the document, the peers and a fresh reader keep two, with no self-check warning.

The command's update begins at once (updateEditorSync), and its $processNestedUpdates runs the read of the deferred change the binding already queued inside it, so the edit commits under the read's collaboration tags and is not written. main behaves the same. A test.fails cell in packages/lexical-y/src/__tests__/unit/regressions/MutationListenerEdit.test.ts reproduces it.