Add box test for KT-33992

compiler/testData/codegen/box/reflection/classLiterals/lambdaClass.kt

@@ -0,0 +1,28 @@
+
+// KT-33992
+
+class P<T>(val a: T, val b: T)
+
+inline fun foo(x: () -> Any) = P(x(), x())
+
+fun box(): String {
+    val p1 = foo {
+        class C
+        C()
+    }
+    val p2 = foo {
+        object {}
+    }
+
+    val x = p1.a
+    val y = p1.b
+
+    val a = p2.a
+    val b = p2.b
+
+    if (x::class != y::class) return "FAIL 1"
+    if (a::class != b::class) return "FAIL 2"
+
+    return "OK"
+}
+