open the project, the page show error

**Describe the bug**
i use the cloud stroage with project, first i open the project, is ok, but reopen the project, the page show this error.

Error: [mobx-state-tree] Failed to resolve reference '2' to type 'User' (from node: /taskStore/list/0/annotators/0/user)

**To Reproduce**
Steps to reproduce the behavior:
like Describe

**Expected behavior**
the page is ok.

**Screenshots**
If applicable, add screenshots to help explain your problem.

**Environment (please complete the following information):**
- OS: [windows]
- Label Studio Version [1.24.0.dev20260729]

**Additional context**
Add any other context about the problem here.

Start by reproducing the cloud-storage project flow described in the issue: open a project, close or leave it, then reopen it on Windows with Label Studio 1.24.0.dev20260729. Investigate the MobX-State-Tree User reference error involving taskStore/list/0/annotators/0/user; done means the project reopens without the page error.

Written by the indexing model from the issue text.