Fix nullability propagation in inline class type mapping

#KT-27096

See https://jetbrains.slack.com/archives/C06E082M6/p1537949572000100

compiler/testData/writeSignature/inlineClasses/genericInlineClassWithDefaultTypeParameter.kt

@@ -16,19 +16,19 @@ object Test {
 }
 
 // method: Test::withNotNullPrimitive-jBNXRxo
-// jvm signature: (Ljava/lang/Object;)V
+// jvm signature: (I)V
 // generic signature: null
 
 // method: Test::withAdditionalGenericParameter-HGK7qdE
-// jvm signature: (LInv;Ljava/lang/Object;)V
-// generic signature: (LInv<Ljava/lang/String;>;Ljava/lang/Object;)V
+// jvm signature: (LInv;Ljava/lang/String;)V
+// generic signature: (LInv<Ljava/lang/String;>;Ljava/lang/String;)V
 
 // method: Test::asNullable-wrrn6tY
 // jvm signature: (LDefault;)V
 // generic signature: (LDefault<Ljava/lang/Integer;>;)V
 
 // method: Test::asNullableTypeArgument-jBNXRxo
-// jvm signature: (Ljava/lang/Object;)V
+// jvm signature: (Ljava/lang/Integer;)V
 // generic signature: null
 
 // method: Test::asNullableAndNullableTypeArgument-wrrn6tY

compiler/testData/writeSignature/inlineClasses/genericInlineClassWithNotNullTypeParameter.kt

@@ -15,15 +15,15 @@ object Test {
 }
 
 // method: Test::withNotNullPrimitive-inxE8tU
-// jvm signature: (Ljava/lang/Object;)V
+// jvm signature: (I)V
 // generic signature: null
 
 // method: Test::asNullable-UczwCtY
-// jvm signature: (Ljava/lang/Object;)V
-// generic signature: null
+// jvm signature: (LNonNull;)V
+// generic signature: (LNonNull<Ljava/lang/Integer;>;)V
 
 // method: Test::withNotNullForNullableValue-3nNnbBk
-// jvm signature: (Ljava/lang/Object;)V
+// jvm signature: (Ljava/lang/Integer;)V
 // generic signature: null
 
 // method: Test::asNullableForNullableValue-wXDnar0