Selection isn't passed with isTriggeredByYDoc

When a `UPDATE_BLOCKS_WITH_UNDO` is triggered and `isTriggeredByYDoc` is present the `selection` isn't passed. This has the effect of resetting the selection status in the editor undo history, and when you travel to the point the focus is removed from the editor.

To reproduce:
- Start storybook 'with on load'
- Click on the end of the first line, press enter, and type a letter (`a`)
- Press undo
- Press undo. Focus has now been lost

Looking at the store actions. The `selection` is passed here:


However it isn't here:


I'm not sure why the number of blocks would be so different either

Start the Storybook “with on load” scenario and inspect the store actions for UPDATE_BLOCKS_WITH_UNDO, comparing the path where selection is passed with the isTriggeredByYDoc path. Reproduce the two-undo sequence and verify that the selection remains available and editor focus is retained afterward.

Written by the indexing model from the issue text.