KT-28585 Fix boxing for values of captured vars of inline class type

compiler/testData/codegen/box/inlineClasses/kt28585.kt

@@ -0,0 +1,18 @@
+// !LANGUAGE: +InlineClasses
+// WITH_RUNTIME
+// IGNORE_BACKEND: JVM_IR
+
+fun box(): String {
+    var uint1 = 1u
+    var uint2 = 2u
+    var uint3 = 3u
+    val uintSet = mutableSetOf(uint1)
+    uintSet.add(uint2);
+    {
+        uintSet.add(uint3)
+        if (!uintSet.contains(1u)) throw AssertionError()
+        if (!uintSet.contains(2u)) throw AssertionError()
+        if (!uintSet.contains(3u)) throw AssertionError()
+    }()
+    return "OK"
+}