operator toDelegateFor: add front-end test for local delegate property

compiler/testData/diagnostics/tests/delegatedProperty/toDelegateFor/localDelegatedProperty.kt

@@ -0,0 +1,11 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
+import kotlin.reflect.KProperty
+
+operator fun String.toDelegateFor(a: Any?, p: KProperty<*>) = this
+operator fun String.getValue(a: Any?, p: KProperty<*>) = this
+
+fun test(): String {
+    val result by "OK"
+    return result
+}

compiler/testData/diagnostics/tests/delegatedProperty/toDelegateFor/localDelegatedProperty.txt

@@ -0,0 +1,5 @@
+package
+
+public fun test(): kotlin.String
+public operator fun kotlin.String.getValue(/*0*/ a: kotlin.Any?, /*1*/ p: kotlin.reflect.KProperty<*>): kotlin.String
+public operator fun kotlin.String.toDelegateFor(/*0*/ a: kotlin.Any?, /*1*/ p: kotlin.reflect.KProperty<*>): kotlin.String