gradle build script to reproduce artifactory publishing issue

build.gradle.kts

plugins {
    `kotlin-dsl`
    id("com.jfrog.artifactory")  version "5.1.11"
    java
    `java-gradle-plugin`
    `maven-publish`
}

group = "org.example.gradle.publishing"
version = "1.0.0-SNAPSHOT"

repositories {
    mavenCentral()
}

gradlePlugin {
    plugins {
        create("greetingPlugin") {
            id = "greeting"
            implementationClass = "org.gradle.sample.plugin.GreetingPlugin"
        }
    }
}

afterEvaluate {
    artifactory {
        publish {
            contextUrl = "$CORPORATE_REPO_URL"
            repository {
                setRepoKey("maven-snapshot")
                setUsername("$PUBLISHING_USER")
                setPassword("$PUBLISHING_PASSWORD")
            }
            defaults {
                // attach all needed publications:
                // - one publication for each plugin "marker" ( a single POM artefact)
                // - one main publication for the plugin library itself (POM + jar artefacts)
                project.extensions.configure(PublishingExtension::class.java) {
                    this.publications.withType(MavenPublication::class.java).forEach {
                        this@defaults.publications(it.name)
                    }
                }
            }
        }
    }
    tasks.named("publish").configure {
        this.dependsOn(this.project.tasks.getByName("artifactoryPublish"))
    }
}