Make KTypeProjection's constructor public

To make it easier to create a KTypeProjection instance given a KVariance
instance (otherwise you currently need to do a "when" on it). Also it's exposed
via automatically generated "copy" anyway

core/builtins/src/kotlin/reflect/KType.kt

@@ -71,7 +71,7 @@ public interface KType {
  * for more information.
  */
 @SinceKotlin("1.1")
-public data class KTypeProjection private constructor(
+public data class KTypeProjection constructor(
         /**
          * The use-site variance specified in the projection, or `null` if this is a star projection.
          */

libraries/tools/binary-compatibility-validator/reference-public-api/kotlin-runtime.txt

@@ -1205,6 +1205,7 @@ public abstract interface class kotlin/reflect/KTypeParameter : kotlin/reflect/K
 
 public final class kotlin/reflect/KTypeProjection {
 	public static final field Companion Lkotlin/reflect/KTypeProjection$Companion;
+	public fun <init> (Lkotlin/reflect/KVariance;Lkotlin/reflect/KType;)V
 	public final fun component1 ()Lkotlin/reflect/KVariance;
 	public final fun component2 ()Lkotlin/reflect/KType;
 	public final fun copy (Lkotlin/reflect/KVariance;Lkotlin/reflect/KType;)Lkotlin/reflect/KTypeProjection;

libraries/tools/binary-compatibility-validator/reference-public-api/kotlin-stdlib-runtime-merged.txt

@@ -3334,6 +3334,7 @@ public abstract interface class kotlin/reflect/KTypeParameter : kotlin/reflect/K
 
 public final class kotlin/reflect/KTypeProjection {
 	public static final field Companion Lkotlin/reflect/KTypeProjection$Companion;
+	public fun <init> (Lkotlin/reflect/KVariance;Lkotlin/reflect/KType;)V
 	public final fun component1 ()Lkotlin/reflect/KVariance;
 	public final fun component2 ()Lkotlin/reflect/KType;
 	public final fun copy (Lkotlin/reflect/KVariance;Lkotlin/reflect/KType;)Lkotlin/reflect/KTypeProjection;