[CI Failure] DCP dependency check times out waiting on podman during Valkey functional tests

## Build Information

Build: https://github.com/microsoft/aspire/actions/runs/32755490521
Build error leg or test failing: Tests / Hosting.Valkey / Hosting.Valkey (ubuntu-latest) / `Aspire.Hosting.Valkey.Tests.ValkeyFunctionalTests.WithDataShouldPersistStateBetweenUsages`
Pull request: #19613

## Error Message

```
Aspire.Hosting.DistributedApplicationException : Application orchestrator dependency check returned an error: The operation has timed out. dcp.info.os-executor Context expired, stopping process... {"Command": "/usr/local/bin/podman", "Args": ["container", "ls", "--last", "1", "--quiet"]}
```

## Description

DCP dependency check times out waiting on podman during Valkey functional tests

**Type**: infra-failure

## Occurrences

| Date | Build | Job | PR |
|------|-------|-----|----|
| 2026-08-24 | [32755490521](https://github.com/microsoft/aspire/actions/runs/32755490521) | Tests / Hosting.Valkey / Hosting.Valkey (ubuntu-latest) | #19613 |

Start with Aspire.Hosting.Valkey.Tests.ValkeyFunctionalTests.WithDataShouldPersistStateBetweenUsages and the linked build run 32755490521. Inspect the test setup and CI logs around the DCP dependency check and podman command. Done means the Valkey functional test no longer times out waiting for podman in the affected Ubuntu CI leg.

Written by the indexing model from the issue text.