chore(psalm): update deprecated method baseline

- Remove stale ThemingController entry (deprecated IConfig::getAppValue
  calls replaced with IAppConfig::getAppValueString)
- Add CommentsEventListener::getEvent(), Activity/Listener::getEvent(),
  and Notification/Listener::getEvent() (pre-existing deprecated usage
  not previously baselined)

Signed-off-by: Anna Larch <anna@nextcloud.com>
AI-Assisted-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: miaulalala

build/psalm-baseline.xml

@@ -43,6 +43,9 @@
     <DeprecatedConstant>
       <code><![CDATA[CommentsEvent::EVENT_ADD]]></code>
     </DeprecatedConstant>
+    <DeprecatedMethod>
+      <code><![CDATA[getEvent]]></code>
+    </DeprecatedMethod>
   </file>
   <file src="apps/comments/lib/Listener/CommentsEventListener.php">
     <DeprecatedConstant>
@@ -51,6 +54,9 @@
       <code><![CDATA[CommentsEvent::EVENT_PRE_UPDATE]]></code>
       <code><![CDATA[CommentsEvent::EVENT_UPDATE]]></code>
     </DeprecatedConstant>
+    <DeprecatedMethod>
+      <code><![CDATA[getEvent]]></code>
+    </DeprecatedMethod>
   </file>
   <file src="apps/comments/lib/MaxAutoCompleteResultsInitialState.php">
     <DeprecatedMethod>
@@ -62,6 +68,10 @@
       <code><![CDATA[CommentsEvent::EVENT_DELETE]]></code>
       <code><![CDATA[CommentsEvent::EVENT_PRE_UPDATE]]></code>
     </DeprecatedConstant>
+    <DeprecatedMethod>
+      <code><![CDATA[getEvent]]></code>
+      <code><![CDATA[getEvent]]></code>
+    </DeprecatedMethod>
   </file>
   <file src="apps/comments/lib/Search/CommentsSearchProvider.php">
     <DeprecatedClass>
@@ -2319,13 +2329,6 @@
       <code><![CDATA[getAppValue]]></code>
     </DeprecatedMethod>
   </file>
-  <file src="apps/theming/lib/Controller/ThemingController.php">
-    <DeprecatedMethod>
-      <code><![CDATA[getAppValue]]></code>
-      <code><![CDATA[getAppValue]]></code>
-      <code><![CDATA[getAppValue]]></code>
-    </DeprecatedMethod>
-  </file>
   <file src="apps/theming/lib/ImageManager.php">
     <DeprecatedMethod>
       <code><![CDATA[deleteAppValue]]></code>