Agent session list empty

### Describe the bug

Agent session list is empty after restart of VScode since update to 0.37.8
Version: 1.109.5 (Universal)
Commit: 072586267e68ece9a47aa43f8c108e0dcbf44622
Date: 2026-02-19T19:43:32.382Z
Electron: 39.3.0
ElectronBuildId: 13313481
Chromium: 142.0.7444.265
Node.js: 22.21.1
V8: 14.2.231.22-electron.0
OS: Darwin arm64 24.6.0

Steps done to try to fix:
Logged in/out from Github in vscode
rm -rf ~/.vscode/extensions/github.copilot-chat*
rm -rf ~/Library/Application\ Support/Code/User/globalStorage/github.copilot-chat
Reinstalled Github Copilot

Restart VScode i get error in runtime status for GitHub Copilot Chat (with empty Agent session list)

```
Uncaught Errors (1)
e is not iterable

TypeError: e is not iterable at gSe.setItems (/Users/a/.vscode/extensions/github.copilot-chat-0.37.8/dist/extension.js:1060:19954)
at iu._computeFn (/Users/a/.vscode/extensions/github.copilot-chat-0.37.8/dist/extension.js:1060:19693)
at iu._recompute (/Users/a/.vscode/extensions/github.copilot-chat-0.37.8/dist/extension.js:1060:11922)
at iu.get (/Users/a/.vscode/extensions/github.copilot-chat-0.37.8/dist/extension.js:1060:11256)
at iu.reportChanges (/Users/a/.vscode/extensions/github.copilot-chat-0.37.8/dist/extension.js:1060:497)
at ASe.endUpdate (/Users/a/.vscode/extensions/github.copilot-chat-0.37.8/dist/extension.js:1060:19452)
at s$t (/Users/a/.vscode/extensions/github.copilot-chat-0.37.8/dist/extension.js:1060:19170)
at iu.recomputeInitiallyAndOnChange (/Users/a/.vscode/extensions/github.copilot-chat-0.37.8/dist/extension.js:1060:1092)
at J1.init (/Users/a/.vscode/extensions/github.copilot-chat-0.37.8/dist/extension.js:2537:1822)
```

### Affected version

_No response_

### Steps to reproduce the behavior

_No response_

### Expected behavior

_No response_

### Additional context

_No response_