MPP: Do not import compilations with 'metadata' target

#KT-26634 Fixed

idea/idea-gradle/src/org/jetbrains/kotlin/idea/configuration/KotlinMPPGradleProjectResolver.kt

@@ -172,6 +172,7 @@ open class KotlinMPPGradleProjectResolver : AbstractProjectResolverExtension() {
             val sourceSetToCompilationData = LinkedHashMap<KotlinSourceSet, MutableSet<GradleSourceSetData>>()
             for (target in mppModel.targets) {
                 if (target.platform == KotlinPlatform.ANDROID) continue
+                if (target.name == KotlinTarget.METADATA_TARGET_NAME) continue
                 val targetData = KotlinTargetData(target.name).also {
                     it.archiveFile = target.jar?.archiveFile
                 }

idea/kotlin-gradle-tooling/src/KotlinMPPGradleModel.kt

@@ -78,6 +78,10 @@ interface KotlinTarget : Serializable {
     val platform: KotlinPlatform
     val compilations: Collection<KotlinCompilation>
     val jar: KotlinTargetJar?
+
+    companion object {
+        const val METADATA_TARGET_NAME = "metadata"
+    }
 }
 
 interface ExtraFeatures : Serializable {