We were storing the state of whether or not a document is read-only in
the store. It does not need to be stored there, and it was creating
consistency problems for us, so let's not store it in there.
fixes https://github.com/tldraw/brivate/issues/1864
### Change Type
<!-- 💡 Indicate the type of change your pull request is. -->
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- [ ] `patch` — Bug Fix
- [ ] `minor` — New Feature
- [x] `major` — Breaking Change
- [ ] `dependencies` — Dependency Update (publishes a `patch` release,
for devDependencies use `internal`)
- [ ] `documentation` — Changes to the documentation only (will not
publish a new version)
- [ ] `tests` — Changes to any testing-related code only (will not
publish a new version)
- [ ] `internal` — Any other changes that don't affect the published
package (will not publish a new version)
### Test Plan
1. Create a multiplayer room
2. Create a read-only link for the room
3. Paste the link into a new browser tab (not incognito, needs to have
the same session state)
4. Check the room is read-only in the new tab
5. Check the room is still writable in the previous tab.
### Release Notes
- Removes the isReadOnly value from the `user_document_settings` record
type.
a3896fc492