[K/N][IR][caches] Fixed problems with inline classes

Fixes https://youtrack.jetbrains.com/issue/KT-50978

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/lazy/IrLazyClass.kt

@@ -75,6 +75,7 @@ class IrLazyClass(
     private fun shouldBuildStub(descriptor: DeclarationDescriptor): Boolean =
         descriptor !is DeclarationDescriptorWithVisibility ||
                 !DescriptorVisibilities.isPrivate(descriptor.visibility) ||
+                // This exception is needed for K/N caches usage.
                 isObject && descriptor is ClassConstructorDescriptor
 
     override var typeParameters: List<IrTypeParameter> by lazyVar(stubGenerator.lock) {