Removing tables from default blocks and trying to format something causes "Extension not found" error #2238
Description
Describe the bug
When removing tables from default blocks and trying to format something you get "Extension not found" error even with tableHandles={false} (using 0.44.0)
To Reproduce
Create custom schema with tables excluded from defaultBlockSpecs, type something and try text selection.
Link to reproducible example: https://stackblitz.com/edit/github-suvedcpb?file=src%2FApp.tsx