Aspire.Cli.Tests should not reference to Aspire.Hosting and Aspire.Hosting.Testing

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Describe the bug

Because `Aspire.Cli.Tests` tests project references both `Aspire.Hosting` and `Aspire.Cli`, and `InternalsVisibleTo` is enabled on both to `Aspire.Cli.Tests`, any internal types have conflicts with "Type exists in both XXX and YYY".

This prevents sharing internal code between the two.

### Expected Behavior

I think `Aspire.Hosting` and `Aspire.Hosting.Testing` shouldn't be referenced by `Aspire.Cli.Tests`.

If there are tests that need both then I argue that is an integration test, and should be moved to a new integration tests project, i.e. `Aspire.Cli.IntegrationTests`.

### Steps To Reproduce

_No response_

### Exceptions (if any)

_No response_

### .NET Version info

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### Anything else?

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