[JS IR] Add serialization regressions tests

compiler/testData/codegen/box/ir/serializationRegressions/genericProperty.kt

@@ -0,0 +1,29 @@
+// IGNORE_BACKEND_FIR: JVM_IR
+// IGNORE_BACKEND: NATIVE
+// IGNORE_BACKEND: JS_IR
+//For KT-6020
+
+// MODULE: lib
+// FILE: lib.kt
+import kotlin.reflect.KProperty1
+import kotlin.reflect.KMutableProperty1
+import kotlin.reflect.KProperty
+
+class Value<T>(var value: T = null as T, var text: String? = null)
+
+val <T> Value<T>.additionalText by DVal(Value<T>::text) //works
+
+val <T> Value<T>.additionalValue by DVal(Value<T>::value) //not work
+
+class DVal<T, R, P: KProperty1<T, R>>(val kmember: P) {
+    operator fun getValue(t: T, p: KProperty<*>): R {
+        return kmember.get(t)
+    }
+}
+
+// MODULE: main(lib)
+// FILE: main.kt
+fun box(): String {
+    val p = Value("O", "K")
+    return p.additionalValue + p.additionalText
+}