Consider property accessor non-default if it has annotations

Otherwise we're not trying to load annotations on the parameter of the
property setter in MemberDeserializer.loadProperty.

Note that after this commit, we could now also assume that if
getter/setter is default, it has no annotations, and thus use
Annotations.EMPTY for default getter/setter in loadProperty. However,
this would cause reflection to work incorrectly on classes compiled by
an older Kotlin compiler, so we'll still try to load annotations on
default accessors for an indefinite time.

 #KT-25499 Fixed

core/deserialization/src/org/jetbrains/kotlin/serialization/deserialization/MemberDeserializer.kt

@@ -128,7 +128,7 @@ class MemberDeserializer(private val c: DeserializationContext) {
             } else {
                 DescriptorFactory.createDefaultSetter(
                     property, annotations,
-                    Annotations.EMPTY /* Otherwise presumably the setter is not default */
+                    Annotations.EMPTY /* Otherwise the setter is not default, see DescriptorResolver.resolvePropertySetterDescriptor */
                 )
             }
         } else {