Desktop Client cannot synchronize Team folders with Advanced Permissions (Read-only ACL)

### Steps to reproduce
1. Install Nextcloud Hub 26 Spring (Server 34.0.1).
2. Enable the **Team folders** app.
3. Create a Team Folder.
4. Enable **Advanced Permissions**.
5. Upload one or more files into the Team Folder.
6. Assign a user with the following permissions:
* ✅ Read
* ❌ Create
* ❌ Write
* ❌ Delete
* ❌ Share
7. Login with the Windows Desktop Client.
8. Start synchronization.

### Expected behaviour
The Desktop Client should synchronize the existing files to the local computer in **read-only mode**.

The user should be able to:

* Browse folders
* Download files
* Synchronize files locally

The user should **not** be able to:

* Upload files
* Modify files
* Delete files

### Actual behaviour
The user can access the Team Folder normally through the Web interface.

* Folder is visible.
* Files are visible.
* Files can be opened and downloaded from the browser.

However, the Desktop Client does not synchronize any files.

The client reports:

```text
WindowsError5: Access is denied.
```

No files are downloaded to the local synchronized folder.

### Workaround

Grant **Write** permission.

Permissions:

* ✅ Read
* ✅ Write
* ❌ Create
* ❌ Delete
* ❌ Share

After enabling **Write**, synchronization starts immediately without any other configuration changes.

### Server configuration

**Operating system:** Linux 7.0.0-27-generic x86_64

**Database:** mysql 11.3.2

**PHP version:** 8.5.8

**Nextcloud version:** Nextcloud Hub 26 Spring (34.0.1)

**Team folders version:** 22.0.2

**Updated from an older Nextcloud/ownCloud or fresh install:** Fresh Install

**Are you using encryption:** no

**Are you using an external user-backend, if yes which one:** ActiveDirectory

### Client configuration

**Browser:** Chrome, Firefox

**Operating system:** Windows 11 Home Single Language 25H2

**Nextcloud Desktop Client:** 33.0.7

### Logs

**Nextcloud Desktop Client:**

```text
WindowsError5: Access is denied.
```

### Additional information

This issue only occurs when **Advanced Permissions** are enabled.

With **Read-only** permission:

| Access Method | Result |
| ----------------------- | ------- |
| Web UI | ✅ Works |
| File download via Web | ✅ Works |
| Desktop synchronization | ❌ Fails |

After granting **Write** permission:

| Access Method | Result |
| ----------------------- | ------------------- |
| Desktop synchronization | ✅ Works immediately |

The issue appears to be related to the interaction between **Team folders Advanced Permissions** and the Desktop Client synchronization process.

According to the expected ACL behavior, users with **Read** permission should be able to synchronize existing files locally in read-only mode without requiring **Write** permission.

#### Web server error log
No relevant errors were found in the server log during synchronization.

#### Client log
The Desktop Client reports:

```text
WindowsError5: Access is denied.
```

Start by reproducing the synchronization failure with Nextcloud Hub 26, Team folders Advanced Permissions, and a read-only ACL, then inspect the Desktop Client's synchronization handling for WindowsError5: Access is denied. Compare behavior with Write permission enabled and verify that existing files synchronize locally without permitting uploads, modifications, or deletions.

Written by the indexing model from the issue text.