fix: The administration declaration's comment describes the overwrite reload EXO-91183 (#233)

**Symptom**: the comment on the `administration` declaration of
`portal-configuration.xml` says that reloading only the exo part of the
site makes the `PageImporter` remove Meeds' administration pages, and
recommends
`io.meeds.administration.portalConfig.metadata.importmode=overwrite` to
reload either part. With Meeds-io/portal#1338 the first is false, and
the recommended property also reloads the `global` site, which the
comment doesn't say.

**Cause**: with Meeds-io/portal#1338, a startup that runs an `overwrite`
declaration of a site imports the pages and the navigation of every
declaration of that site, and removes the pages and nodes none of them
defines. The `io.meeds.administration` properties also set the mode of
this file's `global` declaration.

**Fix**: the comment says that, with `overwrite`, either property
reloads the pages and the navigation of all the administration
declarations, Meeds' included, and removes the pages and nodes none of
them defines, and that the `io.meeds.administration` property reloads
`global` as well. Comment only; `xmllint --noout` on the file at
`943e39f`: no output (well-formed).

**Release order**: merge with or after Meeds-io/portal#1338, whose
behaviour the comment describes.

Knowledge: Meeds-io/eng-standards#409, #560, #586, #587

This change is classified N3: no REST/DAO/schema/ACL surface touched (a
comment in a configuration file).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

Author: boubaker

digital-workplace-webapps/src/main/webapp/WEB-INF/conf/digital-workplace/portal-configuration.xml

@@ -100,11 +100,11 @@
               <boolean>${exo.administration.portalConfig.metadata.override:true}</boolean>
             </field>
             <!--
-              we create here a different property from io.meeds.administration.portalConfig.metadata.importmode
-              If you need to reload exo part of administration configuration, you need to reload all the administration configuration.
-              Else, the PageImporter will REMOVE meeds administration pages.
-              So, to reload administration portal (meeds part or exo part), use
-              io.meeds.administration.portalConfig.metadata.importmode=overwrite
+              A property distinct from io.meeds.administration.portalConfig.metadata.importmode.
+              With overwrite, either property reloads the pages and the navigation of all the administration
+              declarations, Meeds' included, and removes the pages and nodes none of them defines.
+              io.meeds.administration.portalConfig.metadata.importmode also sets the mode of the global
+              declaration below, so it reloads global as well.
             -->
             <field name="importMode">
               <string>${exo.administration.portalConfig.metadata.importmode:insert}</string>