[CI Failure] Multiple unrelated 'Build test project' jobs (Hosting.Azure, Hosting.Azure.Kubernetes, Playground) fail with generic exit code 1

## Build Information

Build: https://github.com/microsoft/aspire/actions/runs/33494022725
Build error leg: Tests / Cli / Cli (windows-latest)
Pull request: #19826

## Error Message

```
Process completed with exit code 1. (Build test project step failed across Hosting.Azure (ubuntu/windows), Hosting.Azure.Kubernetes (ubuntu/windows), and Playground (ubuntu) jobs simultaneously; job logs unavailable: 'Failed to fetch logs for job'). PR only modifies Aspire.Hosting.Kubernetes CSI volume source files, unrelated to Hosting.Azure or Playground test projects failing to build.
```

## Description

Multiple unrelated 'Build test project' jobs (Hosting.Azure, Hosting.Azure.Kubernetes, Playground) fail with generic exit code 1

**Type**: infra-failure

## Occurrences

| Date | Build | Job | PR |
|------|-------|-----|----|
| 2026-09-01 | [33494022725](https://github.com/microsoft/aspire/actions/runs/33494022725) | Tests / Cli / Cli (windows-latest) | #19826 |
| 2026-09-01 | [33511764214](https://github.com/microsoft/aspire/actions/runs/33511764214) | Tests / Microsoft.Data.SqlClient / Microsoft.Data.SqlClient (windows-latest) | #19760 |
| 2026-09-10 | [34508764231](https://github.com/microsoft/aspire/actions/runs/34508764231) | Tests / No-package tests (regular, Aspire.Hosting.RemoteHost.Tests, Hosting.RemoteHost, Hosting.RemoteHost... / Hosting.RemoteHost (windows-latest) | #20036 |
| 2026-09-10 | [34512081344](https://github.com/microsoft/aspire/actions/runs/34512081344) | Tests / Build native CLI archive (Windows) / Build CLI (win-x64) | #20035 |
| 2026-09-10 | [34519005883](https://github.com/microsoft/aspire/actions/runs/34519005883) | Tests / No-package tests (regular, Aspire.Hosting.RemoteHost.Tests, Hosting.RemoteHost, Hosting.RemoteHos... / Hosting.RemoteHost (windows-latest) | #20040 |
| 2026-09-10 | [34519184641](https://github.com/microsoft/aspire/actions/runs/34519184641) | Tests / No-package tests (regular, Aspire.Dashboard.Tests, Dashboard, Dashboard, tests/Aspire.Dashboard.T... / Dashboard (windows-latest) | #19987 |
| 2026-09-11 | [34571189358](https://github.com/microsoft/aspire/actions/runs/34571189358) | Tests / No-package tests (regular, Aspire.Dashboard.Tests, Dashboard, Dashboard, tests/Aspire.Dashboard.T... / Dashboard (windows-latest) | #19965 |
| 2026-09-14 | [34882504789](https://github.com/microsoft/aspire/actions/runs/34882504789) | Tests / No-package tests (regular, Aspire.Hosting.RemoteHost.Tests, Hosting.RemoteHost, Hosting.RemoteHos... / Hosting.RemoteHost (windows-latest) | #19939 |
| 2026-09-15 | [34941224700](https://github.com/microsoft/aspire/actions/runs/34941224700) | Tests / No-package tests (regular, Aspire.Hosting.RemoteHost.Tests, Hosting.RemoteHost, Hosting.RemoteHos... / Hosting.RemoteHost (windows-latest) | #20011 |
| 2026-09-15 | [34997664230](https://github.com/microsoft/aspire/actions/runs/34997664230) | Tests / No-package tests (regular, Aspire.Hosting.RemoteHost.Tests, Hosting.RemoteHost, Hosting.RemoteHos... / Hosting.RemoteHost (windows-latest) | #20143 |
| 2026-09-16 | [35043367059](https://github.com/microsoft/aspire/actions/runs/35043367059) | Tests / No-package tests (regular, Aspire.Hosting.RemoteHost.Tests, Hosting.RemoteHost, Hosting.RemoteHos... / Hosting.RemoteHost (windows-latest) | #20140 |

Start by comparing the listed GitHub Actions runs and the affected “Build test project” jobs across Hosting.Azure, Hosting.Azure.Kubernetes, Playground, RemoteHost, and Dashboard. Investigate why logs cannot be fetched and identify the shared cause; done means the unrelated jobs report actionable failures and no longer fail with an unexplained exit code 1.

Written by the indexing model from the issue text.