Bump mobx-state-tree from 6.0.1 to 7.0.2

Bumps [mobx-state-tree](https://github.com/mobxjs/mobx-state-tree) from 6.0.1 to 7.0.2.
- [Release notes](https://github.com/mobxjs/mobx-state-tree/releases)
- [Changelog](https://github.com/mobxjs/mobx-state-tree/blob/master/changelog.md)
- [Commits](https://github.com/mobxjs/mobx-state-tree/compare/v6.0.1...v7.0.2)

---
updated-dependencies:
- dependency-name: mobx-state-tree
  dependency-version: 7.0.2
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

packages/client/package.json

@@ -50,7 +50,7 @@
     "marked-katex-extension": "^5.1.4",
     "mobx": "^6.13.5",
     "mobx-react-lite": "^4.0.7",
-    "mobx-state-tree": "^6.0.1",
+    "mobx-state-tree": "^7.0.2",
     "qrcode.react": "^4.1.0",
     "react": "^19.1.0",
     "react-dom": "^19.1.0",