undo devFreeze unintentional commit (#3466)

Undo the accidental commit.

### Change Type

<!-- ❗ Please select a 'Scope' label ❗️ -->

- [x] `sdk` — Changes the tldraw SDK
- [ ] `dotcom` — Changes the tldraw.com web app
- [ ] `docs` — Changes to the documentation, examples, or templates.
- [ ] `vs code` — Changes to the vscode plugin
- [ ] `internal` — Does not affect user-facing stuff

<!-- ❗ Please select a 'Type' label ❗️ -->

- [x] `bugfix` — Bug fix
- [ ] `feature` — New feature
- [ ] `improvement` — Improving existing features
- [ ] `chore` — Updating dependencies, other boring stuff
- [ ] `galaxy brain` — Architectural changes
- [ ] `tests` — Changes to any test code
- [ ] `tools` — Changes to infrastructure, CI, internal scripts,
debugging tools, etc.
- [ ] `dunno` — I don't know

packages/store/src/lib/devFreeze.ts

@@ -15,8 +15,6 @@ import { STRUCTURED_CLONE_OBJECT_PROTOTYPE } from '@tldraw/utils'
  * @public
  */
 export function devFreeze<T>(object: T): T {
-	return object
-
 	if (process.env.NODE_ENV === 'production') {
 		return object
 	}