Disable `g` keyboard shortcut in readonly mode. Show laser tool in
toolbar when in readonly mode.
Resolves [#1936](https://github.com/tldraw/brivate/issues/1936)
Resolves [#1935](https://github.com/tldraw/brivate/issues/1935)
### Change Type
- [x] `patch` — Bug Fix
### Test Plan
1. Open a readonly room.
2. Press `g` and make sure it doesn't switch to it.
3. Laser tool should be visible in the toolbar in readonly rooms.
### Release Notes
- Disable geo tool shortcut in readonly mode. Show laser on the toolbar.
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Co-authored-by: Steve Ruiz <steveruizok@gmail.com>
042edeb4b4