Custom preview annotation with ShowkaseComposable

[oleksandrbalan-etn]

Thank you for your library!

We recently migrated from KAPT to KSP and encountered some unexpected behavior.

We use a custom annotation, ComponentPreview, for stacking previews:

@Preview(name = "Light preview", showBackground = true)
@Preview(name = "Dark preview", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
annotation class ComponentPreview

Additionally, each component preview is annotated with ShowkaseComposable to specify a group in Showkase browser:

@Composable
@ShowkaseComposable(group = "MyGroup")
@ComponentPreview
fun GreetingPreview() {
    DemoTheme {
        Greeting()
    }
}

This setup worked fine with KAPT. However, after migrating to KSP, the Showkase generates two components: one for the Default group and another for the specified group (e.g., MyGroup).

public val GreetingPreviewDefaultGroupGreetingPreviewDarkpreview1: ShowkaseBrowserComponent =
    ShowkaseBrowserComponent(
        group = "Default Group",
        componentName = "GreetingPreview - Dark preview",
        componentKDoc = "",
        componentKey =
            """com.example.showkasenewkotlin_GreetingPreview_null_DefaultGroup_GreetingPreview-Darkpreview_1_null""",
        isDefaultStyle = false,
        component = @Composable { GreetingPreview() }
    )
    
public val GreetingPreviewGroupGreetingPreview: ShowkaseBrowserComponent = ShowkaseBrowserComponent(
        group = "Group",
        componentName = "GreetingPreview",
        componentKDoc = "",
        componentKey =
            """com.example.showkasenewkotlin_GreetingPreview_null_Group_GreetingPreview_0_null""",
        isDefaultStyle = false,
        component = @Composable { GreetingPreview() }
    )

Is there a way to ignore the Default group and generate components only for composables annotated with ShowkaseComposable?