JVM IR: fix VerifyError on annotated annotation properties

The problem was that we tried to generate an `$annotations` method for a
property declared in an annotation class. That method is final and has a
body, which is not allowed in annotation classes. Now we're generating
this method in the separate `$DefaultImpls` class as for properties in
interfaces.

Note that the added test still doesn't find any annotations because the
proper support is needed in reflection (KT-22463). Currently it only
checks that no VerifyError happens.

compiler/testData/codegen/box/annotations/annotationProperty.kt

@@ -0,0 +1,13 @@
+// TARGET_BACKEND: JVM
+// WITH_RUNTIME
+
+@Target(AnnotationTarget.PROPERTY)
+annotation class Anno(val value: String)
+
+annotation class M(@Anno("OK") val result: Int)
+
+fun box(): String =
+    M::class.java.getAnnotation(Anno::class.java)?.value
+        // TODO: fix KT-22463 and enable this test
+        // ?: "Fail: no annotation"
+        ?: "OK"