[CI Failure] Setup Deno step fails on windows-latest, unrelated to PR changes (likely transient download/network issue)

## Build Information

Build: https://github.com/microsoft/aspire/actions/runs/34240101007
Build error leg: Tests / No-package tests (regular, Aspire.Hosting.JavaScript.Tests, ...) / Hosting.JavaScript (windows-latest)
Pull request: #19386

## Error Message

```
Job: Hosting.JavaScript (windows-latest) failed at 'Setup Deno' step; job logs unavailable ('Failed to fetch logs for job'). PR only modifies Aspire.Hosting.Maui, no relation to Deno setup or JavaScript hosting tests.
```

## Description

Setup Deno step fails on windows-latest, unrelated to PR changes (likely transient download/network issue)

**Type**: infra-failure

## Occurrences

| Date | Build | Job | PR |
|------|-------|-----|----|
| 2026-09-08 | [34240101007](https://github.com/microsoft/aspire/actions/runs/34240101007) | Tests / No-package tests (regular, Aspire.Hosting.JavaScript.Tests, ...) / Hosting.JavaScript (windows-latest) | #19386 |

Review build 34240101007 and the Hosting.JavaScript windows-latest job, beginning at the Setup Deno step. The job logs are unavailable, so check whether the failure recurs and whether the CI job completes successfully; done means the cause is understood or a concrete CI change is identified.

Written by the indexing model from the issue text.