Fixed import of JS source sets with Both mode

Added flag indicating that source set naming contract is violated. In this case disambiguition classifier is ignored in IDE.
#KT-37562 Fixed

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

@@ -354,7 +354,12 @@ class KotlinMPPGradleModelBuilder : ModelBuilderService {
         val getDisambiguationClassifier = targetClass.getMethodOrNull("getDisambiguationClassifier") ?: return null
         val platformId = (getPlatformType.invoke(gradleTarget) as? Named)?.name ?: return null
         val platform = KotlinPlatform.byId(platformId) ?: return null
-        val disambiguationClassifier = getDisambiguationClassifier(gradleTarget) as? String
+        val useDisambiguationClassifier =
+            targetClass.getMethodOrNull("getUseDisambiguitionClassifierAsSourcesetNamePreffix")?.invoke(gradleTarget) as? Boolean ?: true
+        val disambiguationClassifier = if (useDisambiguationClassifier)
+            getDisambiguationClassifier(gradleTarget) as? String
+        else
+            null
         val getPreset = targetClass.getMethodOrNull("getPreset")
         val targetPresetName: String?
         targetPresetName = try {

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

@@ -28,6 +28,7 @@ interface KotlinTargetComponent : SoftwareComponent {
 interface KotlinTarget : Named, HasAttributes {
     val targetName: String
     val disambiguationClassifier: String? get() = targetName
+    val useDisambiguitionClassifierAsSourcesetNamePreffix: Boolean
 
     val platformType: KotlinPlatformType
 

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

@@ -21,12 +21,16 @@ abstract class KotlinOnlyTargetPreset<R : KotlinOnlyTarget<T>, T : KotlinCompila
     protected open fun provideTargetDisambiguationClassifier(target: KotlinOnlyTarget<T>): String? =
         target.targetName
 
+    // This function is used in IDE import in order to indicate that sourceSetName=disambiguitionClassifier+compilationName
+    protected open fun useDisambiguitionClassifierAsSourcesetNamePreffix() = true
+
     abstract protected fun instantiateTarget(name: String): R
 
     override fun createTarget(name: String): R {
         val result = instantiateTarget(name).apply {
             targetName = name
             disambiguationClassifier = provideTargetDisambiguationClassifier(this@apply)
+            useDisambiguitionClassifierAsSourcesetNamePreffix = useDisambiguitionClassifierAsSourcesetNamePreffix()
             preset = this@KotlinOnlyTargetPreset
 
             val compilationFactory = createCompilationFactory(this)

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

@@ -44,6 +44,9 @@ abstract class AbstractKotlinTarget(
     override val defaultConfigurationName: String
         get() = disambiguateName("default")
 
+    override var useDisambiguitionClassifierAsSourcesetNamePreffix: Boolean = true
+        internal set
+
     override val apiElementsConfigurationName: String
         get() = disambiguateName("apiElements")
 

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/KotlinJsTargetPreset.kt

@@ -88,6 +88,9 @@ class KotlinJsSingleTargetPreset(
     project,
     kotlinPluginVersion
 ) {
+
+    override fun useDisambiguitionClassifierAsSourcesetNamePreffix() = false
+
     // In a Kotlin/JS single-platform project, we don't need any disambiguation suffixes or prefixes in the names:
     override fun provideTargetDisambiguationClassifier(target: KotlinOnlyTarget<KotlinJsCompilation>): String? =
         irPreset?.let {