[CI Failure] Flaky: VS Code extension E2E (Windows, tree-actions) shard fails with generic exit code 1, unrelated to PR changes

## Build Information

Build: https://github.com/microsoft/aspire/actions/runs/34795444609
Build error leg or test failing: Tests / Run VS Code extension E2E tests / VS Code extension E2E (Windows, dynamic-debug-configuration) / `VS Code extension E2E (Windows, tree-actions)`
Pull request: #20062

## Error Message

```
Process completed with exit code 1. (Run extension E2E tests step failed; job logs unavailable: 'Failed to fetch logs for job'). No TRX test failures extracted.
```

## Description

Flaky: VS Code extension E2E (Windows, tree-actions) shard fails with generic exit code 1, unrelated to PR changes

**Type**: flaky-test

## Occurrences

| Date | Build | Job | PR |
|------|-------|-----|----|
| 2026-09-14 | [34795444609](https://github.com/microsoft/aspire/actions/runs/34795444609) | Tests / Run VS Code extension E2E tests / VS Code extension E2E (Windows, dynamic-debug-configuration) | #20062 |

Start with build 34795444609 and the Tests / Run VS Code extension E2E tests workflow, focusing on the Windows tree-actions shard and its failed Run extension E2E tests step. The reported job logs are unavailable and no TRX failures were extracted, so done means identifying and addressing the flaky failure and confirming the shard passes reliably.

Written by the indexing model from the issue text.