Distinguish "user_annotation" of top-level entities (CONSEJIRA-615)

We change the translation of this field for archive transfer, archive
unit and binary data object entity types. Indeed, this actually
corresponds to the entity label not a description of expected value in
generated profile.

cubicweb_seda/i18n/fr.po

@@ -7886,11 +7886,11 @@ msgstr ""
 
 msgctxt "SEDAArchiveTransfer"
 msgid "user_annotation"
-msgstr ""
+msgstr "libellé de l'entité"
 
 msgctxt "SEDAArchiveUnit"
 msgid "user_annotation"
-msgstr ""
+msgstr "libellé de l'entité"
 
 msgctxt "SEDAAuthorizedAgent"
 msgid "user_annotation"
@@ -7898,7 +7898,7 @@ msgstr ""
 
 msgctxt "SEDABinaryDataObject"
 msgid "user_annotation"
-msgstr ""
+msgstr "libellé de l'entité"
 
 msgctxt "SEDAClassificationReassessingDate"
 msgid "user_annotation"