KT-23397 Optimize out field for property delegate when it's safe (JVM)

compiler/testData/codegen/box/delegatedProperty/delegateToConst/delegateToConst.kt

@@ -0,0 +1,8 @@
+// CHECK_BYTECODE_LISTING
+
+operator fun Any?.getValue(thisRef: Any?, property: Any?) =
+    if (this == 1 && thisRef == null) "OK" else "Failed"
+
+val s: String by 1
+
+fun box() = s