OpenTelemetryCollector fails to export due to DNS issues

### Describe the bug

The OTel collector provided by CommunityToolkit.Aspire.Hosting.OpenTelemetryCollector fails to export anything back to Aspire because it cannot resolve `aspire.dev.internal` via DNS.

### Regression

_No response_

### Steps to reproduce

* Add the CommunityToolkit.Aspire.Hosting.OpenTelemetryCollector package to an Aspire AppHost project.
* Add the collector to the AppHost using `builder.AddOpenTelemetryCollector("otel-collector").WithConfig("config.yaml");` where config.yaml is [the example configuration](https://github.com/CommunityToolkit/Aspire/blob/main/examples/opentelemetry-collector/CommunityToolkit.Aspire.Hosting.OpenTelemetryCollector.AppHost/config.yaml). I have also tried including `.WithOtlpExporter(OtlpProtocol.Grpc)` and that did not help.
* The collector starts reporting errors:
```
2026-09-01T13:40:49.730Z warn grpc@v1.83.0/resolver_wrapper.go:157 [core] [Channel #1] ccResolverWrapper: reporting error to cc: dns: A record lookup error: lookup aspire.dev.internal on 10.89.1.1:53: dial udp 10.89.1.1:53: i/o timeout {"resource": {"service.instance.id": "fd5d7e94-490d-46e1-853e-d89d458eac81", "service.name": "otelcol-contrib", "service.version": "0.159.0"}, "grpc_log": true}
```

### Expected behavior

The OTel collector is able to collect OpenTelemetry data and forward it to Aspire.

### Screenshots

_No response_

### IDE and version

Other

### IDE version

Visual Studio 2026 v18.9.2

### Nuget packages

```text
CommunityToolkit.Aspire.Hosting.OpenTelemetryCollector v13.5.0
```

### Additional context

_No response_

### Help us help you

Yes, but only if others can assist

Start with the CommunityToolkit.Aspire.Hosting.OpenTelemetryCollector package, the AppHost AddOpenTelemetryCollector call, and the example config.yaml linked in the report. Reproduce with package version 13.5.0 and inspect the collector's DNS error for aspire.dev.internal; done means the collector resolves the Aspire endpoint and forwards collected OpenTelemetry data.

Written by the indexing model from the issue text.