RFR: 7903965: Fix Launching Tests from Context Menu [v4]

[Jorn Vernee]

On Mon, 10 Mar 2025 16:47:09 GMT, Oleksii Sylichenko <duke at openjdk.org> wrote:

>> I'm not talking about `getVirtualFile`, I'm talking about the call to `getContainingFile`, inside `nameForElement`. If `element` is a `PsiDirectory`, then `getContainingFile` will return `null` (looking at the impl in `PsiDirectoryImpl`): 
>> ![image](https://github.com/user-attachments/assets/1199772b-c6c0-429e-9db9-5872c048c921)
>
> Ok, so the `JTRegDirectoryConfigurationProducer` class is not needed because directory processing will be handled by the 'class producer', and I will take care of additional `null` checks.
> 
> Therefore, we don't need `JTRegClassConfigurationProducer` as the only child of `JTRegConfigurationProducer`, so I propose moving all its code to the parent class and removing it as well.
> 
> Would that be okay?

That sounds good

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PR Review Comment: https://git.openjdk.org/jtreg/pull/252#discussion_r1987820091