Let other modules alter the list of available condition plugins

I agree this request totally makes sense, even if it's more or less an edge-case. What do the maintainers think? @pookmish @GeekMerlin?

@Dmitriy.trt could you eventually provide a test or check if this is already covered by an existing test to ensure this works as expected and convince the maintainers this can be committed without risks?

This makes sense. It performs the same tasks but adds calls to the alter hooks. Existing behavior doesn't change unless there's existing alter hooks in the user's codebase.

Now that this issue is closed, please review the contribution record.

As a contributor, attribute any organization helped you, or if you volunteered your own time.

Maintainers, please credit people who helped resolve this issue.

Thanks for maintaining this great module @pookmish!

Maybe review the contribution records (https://new.drupal.org/contribution-record/10201196) for this issue (and some of the other recent ones), since it looks like some of the users -- including yourself -- helped solve those issues, but didn't get credited ... Thanks.