[Tests] Make sure desugaring works with context receivers

compiler/testData/codegen/box/extensionFunctions/contextReceivers/delegatedPropertiesOperators.kt

@@ -0,0 +1,36 @@
+// !LANGUAGE: +ContextReceivers
+// TARGET_BACKEND: JVM_IR
+// IGNORE_BACKEND_FIR: JVM_IR
+// WITH_STDLIB
+
+import kotlin.reflect.KProperty
+
+var operationScore = 0
+
+class Delegate {
+    var delegateValue = "fail"
+
+    context(Int)
+    operator fun getValue(thisRef: Any?, property: KProperty<*>): String {
+        operationScore += this@Int
+        return delegateValue
+    }
+
+    context(Int)
+    operator fun setValue(thisRef: Any?, property: KProperty<*>, value: String) {
+        operationScore += this@Int
+        delegateValue = value
+    }
+}
+
+context(Int)
+class Result {
+    var s: String by Delegate()
+}
+
+fun box(): String {
+    val result = with(1) { Result() }
+    result.s = "OK"
+    val returnValue = result.s
+    return if (operationScore == 2) returnValue else "fail"
+}