Gradle Artifactory plugin doesn't work with gradle plugins

[Sineaggi]

Describe the bug
There's not simple way to get the artifactory plugin to publish gradle plugins

To Reproduce
Steps to reproduce the behavior

plugins {
    `java-gradle-plugin`
    id "com.jfrog.artifactory" version "4.28.0"
}

gradlePlugin {
    plugins {
        register("example") {
            id = "com.example"
            implementationClass = "com.example.ExamplePlugin"
        }
    }
}

Expected behavior
Running ./gradlew artifactoryPublish` should publish the gradle jar and plugin markers

Screenshots
If applicable, add screenshots to help explain your problem.

Versions

• Gradle Artifactory plugin version: 4.28.0
• Operating system: Linux
• Artifactory Version: 7.25.7

Additional context
NA

[Sineaggi]

The only way we've gotten publishing to work is to add all publications manually

afterEvaluate {
    tasks.named<org.jfrog.gradle.plugin.artifactory.task.ArtifactoryTask>("artifactoryPublish") {
        publications(*(publishing.publications.toTypedArray()))
    }
}

[rkrisztian]

This is important to me too, as Gradle authors already attempted to deprecate project.afterEvaluate (see https://docs.gradle.org/6.3/userguide/upgrading_version_5.html#calling_project_afterevaluate_on_an_evaluated_project_has_been_deprecated), which, with an ideal Artifactory plugin design, the following code shouldn't need to use:

afterEvaluate {
	tasks.named('artifactoryPublish', ArtifactoryTask) {
		publications 'ALL_PUBLICATIONS'
	}
}