[BUGFIX] Old property mapper shouldn't map other domain objects

The fix of issue #45622 opened the reflection service to handle
more object types. Now, the old property mapper stumbles upon that
and tries to map objects it did not handle before. For example the
sys_note extension now throws errors about broken mapping.
The patch restricts the old property mapper to object types it
handled before.

Change-Id: Id41f8c75944dc5e868d793a0831ebad98a12bb07
Resolves: #45705
Related: #45622
Releases: 6.1, 6.0