Make inline class wrapper constructor synthetic

compiler/testData/codegen/bytecodeText/inlineClasses/constructorWithInlineClassParametersIsNotMangled.kt

@@ -6,5 +6,5 @@ class C1(val ss: Str)
 
 class C2(val ss1: Str, val ss2: Str)
 
-// 2 public \<init\>\(Ljava/lang/String;\)V
+// 1 public \<init\>\(Ljava/lang/String;\)V
 // 1 public \<init\>\(Ljava/lang/String;Ljava/lang/String;\)V

compiler/testData/codegen/bytecodeText/inlineClasses/inlineClassWrapperPrimaryConstructorIsSynthetic.kt

@@ -0,0 +1,6 @@
+// !LANGUAGE: +InlineClasses
+
+inline class Z(val x: Int)
+
+// 1 public synthetic <init>\(I\)V
+// 1 public static constructor\(I\)I