JS: fix translation of reassignment of inline properties. See KT-15590

js/js.translator/testData/box/inlineSizeReduction/propertyReassignment.kt

@@ -0,0 +1,42 @@
+// CHECK_VARS_COUNT: function=test1 count=0
+// CHECK_VARS_COUNT: function=test2 count=1
+// CHECK_VARS_COUNT: function=test3 count=0
+
+class A {
+    var result = 1
+
+    inline var z: Int
+        get() = result
+        set(value) {
+            result = value
+        }
+}
+
+val a = A()
+
+fun test1(): Int {
+    a.z += 1
+    return a.z
+}
+
+fun test2(): Int {
+    return a.z++
+}
+
+fun test3(): Int {
+    return ++a.z
+}
+
+fun box(): String {
+    if (test1() != 2) return "fail 1: ${a.z}"
+
+    var p = test2()
+    if (a.z != 3) return "fail 2: ${a.z}"
+    if (p != 2) return "fail 3: $p"
+
+    p = test3()
+    if (a.z != 4) return "fail 4: ${a.z}"
+    if (p != 4) return "fail 5: $p"
+
+    return "OK"
+}