Generate synthetic getter & setter descriptors for static properties in Java classes

(recognized as properties defined in classes without dispatchReceiver and extensionReceiver).
Fix 'when' generation for else-only case.

compiler/testData/ir/irText/expressions/jvmStaticFieldReference.kt

@@ -1,3 +1,25 @@
-fun test1() {
-//    System.out.println("test1")
+fun testFun() {
+    System.out.println("testFun")
+}
+
+var testProp: Any
+    get() {
+        System.out.println("testProp/get")
+        return 42
+    }
+    set(value) {
+        System.out.println("testProp/set")
+    }
+
+class TestClass {
+    val test = when {
+        else -> {
+            System.out.println("TestClass/test")
+            42
+        }
+    }
+
+    init {
+        System.out.println("TestClass/init")
+    }
 }