fix(activity): regroup Files and split sharing activity

apps/comments/lib/Activity/Setting.php

@@ -5,10 +5,10 @@
  */
 namespace OCA\Comments\Activity;
 
-use OCP\Activity\ISetting;
+use OCP\Activity\ActivitySettings;
 use OCP\IL10N;
 
-class Setting implements ISetting {
+class Setting extends ActivitySettings {
 	public function __construct(
 		protected IL10N $l,
 	) {
@@ -22,6 +22,14 @@ public function getName(): string {
 		return $this->l->t('<strong>Comments</strong> for files');
 	}
 
+	public function getGroupIdentifier() {
+		return 'files';
+	}
+
+	public function getGroupName() {
+		return $this->l->t('Files');
+	}
+
 	public function getPriority(): int {
 		return 50;
 	}

apps/files_sharing/lib/Activity/Settings/ShareActivitySettings.php

@@ -23,10 +23,10 @@ public function __construct(IL10N $l) {
 	}
 
 	public function getGroupIdentifier() {
-		return 'files';
+		return 'sharing';
 	}
 
 	public function getGroupName() {
-		return $this->l->t('Files');
+		return $this->l->t('Sharing');
 	}
 }

apps/systemtags/lib/Activity/Setting.php

@@ -5,19 +5,11 @@
  */
 namespace OCA\SystemTags\Activity;
 
-use OCP\Activity\ISetting;
+use OCP\Activity\ActivitySettings;
 use OCP\IL10N;
 
-class Setting implements ISetting {
-
-	/** @var IL10N */
-	protected $l;
-
-	/**
-	 * @param IL10N $l
-	 */
-	public function __construct(IL10N $l) {
-		$this->l = $l;
+class Setting extends ActivitySettings {
+	public function __construct(protected IL10N $l) {
 	}
 
 	/**
@@ -36,6 +28,22 @@ public function getName() {
 		return $this->l->t('<strong>System tags</strong> for a file have been modified');
 	}
 
+	/**
+	 * @return string Lowercase a-z and underscore only group identifier
+	 * @since 20.0.0
+	 */
+	public function getGroupIdentifier() {
+		return 'files';
+	}
+
+	/**
+	 * @return string A translated string for the settings group
+	 * @since 20.0.0
+	 */
+	public function getGroupName() {
+		return $this->l->t('Files');
+	}
+
 	/**
 	 * @return int whether the filter should be rather on the top or bottom of
 	 * the admin section. The filters are arranged in ascending order of the

lib/private/Activity/ActivitySettingsAdapter.php

@@ -17,12 +17,10 @@
  * class based one
  */
 class ActivitySettingsAdapter extends ActivitySettings {
-	private $oldSettings;
-	private $l10n;
-
-	public function __construct(ISetting $oldSettings, IL10N $l10n) {
-		$this->oldSettings = $oldSettings;
-		$this->l10n = $l10n;
+	public function __construct(
+		private ISetting $oldSettings,
+		private IL10N $l10n
+	) {
 	}
 
 	public function getIdentifier() {