[GR-72054] [GR-71348] Improve reflection registration in extension layers

[graalvmbot]

Layered reflection registration in the application layer contains the following bugs:

• Fields without offset should be marked as incomplete so they can be registered in extension layers
• Methods without an accessor should be marked as incomplete so they can be registered in extension layers
• Values returned by getDeclaredMethod/Constructors/Fields should be deduplicated to ensure values from the application layer are not ignored.
• The layer id used for accessing the records components was wrong.

This PR also adds a missing @Uninterruptible annotation on Target_jdk_jfr_internal_JVM_Util.jfrNotSupportedException.