[Psi2Ir, Fir2Ir] Generate toString, hashCode, equals methods for MF VC

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/export/ExportModelGenerator.kt

@@ -211,7 +211,7 @@ class ExportModelGenerator(
             }
         }
 
-        if (klass.isInline)
+        if (klass.isSingleFieldValueClass)
             return Exportability.Prohibited("Inline class ${klass.fqNameWhenAvailable}")
 
         return Exportability.Allowed

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/lower/calls/EqualityAndComparisonCallsTransformer.kt

@@ -186,7 +186,7 @@ class EqualityAndComparisonCallsTransformer(context: JsIrBackendContext) : Calls
         isBuiltin() && this != PrimitiveType.FLOATING_POINT_NUMBER
 
     private fun IrType.isDefaultEqualsMethod() =
-        findEqualsMethod()?.origin === IrDeclarationOrigin.GENERATED_INLINE_CLASS_MEMBER
+        findEqualsMethod()?.origin === IrDeclarationOrigin.GENERATED_SINGLE_FIELD_VALUE_CLASS_MEMBER
 
     private fun IrExpression.isBoxIntrinsic() =
         this is IrCall && symbol == icUtils.boxIntrinsic