Make unsigned array constructor-like functions inline-only

libraries/stdlib/unsigned/src/kotlin/ULongArray.kt

@@ -46,11 +46,12 @@ internal constructor(private val storage: LongArray) : Collection<ULong> {
 
 @SinceKotlin("1.3")
 @ExperimentalUnsignedTypes
+@kotlin.internal.InlineOnly
 public inline fun ULongArray(size: Int, init: (Int) -> ULong): ULongArray {
     return ULongArray(LongArray(size) { index -> init(index).toLong() })
 }
 
 @SinceKotlin("1.3")
 @ExperimentalUnsignedTypes
-// TODO: @kotlin.internal.InlineOnly
+@kotlin.internal.InlineOnly
 public inline fun ulongArrayOf(vararg elements: ULong): ULongArray = elements