[IR] Don't evaluate expressions in inner class of an annotation

compiler/testData/codegen/box/involvesIrInterpreter/annotationClassWithInner.kt

@@ -0,0 +1,11 @@
+val a = "OK"
+
+annotation class Anno {
+    class Inner {
+        val shouldNotBeEvaluated = a
+    }
+}
+
+fun box(): String {
+    return Anno.Inner().shouldNotBeEvaluated
+}