Allow the common platform type consumers to consume platform artifacts

When a Kotlin metadata input configuration tries to resolve a module
with no Kotlin metadata (such as: plain old Maven module, a non-MPP
Kotlin project with a single platform), it should be able to resolve
successfully.

Given that the input metadata configurations extend from source set
dependencies configurations, where platform-specific dependencies may
occur, allowing the metadata configuration to resolve such dependencies
into platform artifacts seems to achieve successful dependency
resolution.

Issue #KT-26834 Fixed

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinPluginWrapper.kt

@@ -78,11 +78,7 @@ abstract class KotlinBasePluginWrapper(
     }
 
     private fun setupAttributeMatchingStrategy(project: Project) = with(project.dependencies.attributesSchema) {
-        attribute(KotlinPlatformType.attribute).run {
-            if (isGradleVersionAtLeast(4, 0)) {
-                compatibilityRules.add(KotlinPlatformType.CompatibilityRule::class.java)
-            }
-        }
+        KotlinPlatformType.setupAttributesMatchingStrategy(this)
     }
 
     internal abstract fun getPlugin(