Add extra diagnostic information when no common supertypes are found

We're suspecting that the culprit of such errors is race condition on
'supertypes' in AbstractTypeConstructor, when it is created using
'LockBasedStorageManager.NO_LOCKS'

core/descriptors/src/org/jetbrains/kotlin/types/AbstractTypeConstructor.kt

@@ -76,4 +76,6 @@ abstract class AbstractTypeConstructor(storageManager: StorageManager) : TypeCon
     protected open fun getAdditionalNeighboursInSupertypeGraph(useCompanions: Boolean): Collection<KotlinType> = emptyList()
     protected open fun defaultSupertypeIfEmpty(): KotlinType? = null
 
+    // Only for debugging
+    fun renderAdditionalDebugInformation(): String = "supertypes=${supertypes.renderDebugInformation()}"
 }