fix(provisioning_api): Allow group details access for users with admin delegation

This fixes an issue where users with "Administration privileges → Users" could not access
the groups details endpoint in the provisioning API, resulting in a 403 Forbidden error.

There is a problem with adding the  `AuthorizedAdminSetting` attribute (middleware)
that only allows access to users with Sharing admin privileges.

Users with "`Users` admin" privileges should also be able to access group details.

Resolves: #52617

Signed-off-by: nfebe <fenn25.fn@gmail.com>

Author: nfebe

apps/provisioning_api/lib/Controller/GroupsController.php

@@ -97,8 +97,18 @@ public function getGroups(string $search = '', ?int $limit = null, int $offset =
 	 * 200: Groups details returned
 	 */
 	#[NoAdminRequired]
-	#[AuthorizedAdminSetting(settings: Sharing::class)]
 	public function getGroupsDetails(string $search = '', ?int $limit = null, int $offset = 0): DataResponse {
+		$currentUser = $this->userSession->getUser();
+		if ($currentUser === null) {
+			throw new OCSForbiddenException('Not logged in');
+		}
+
+		$isAdmin = $this->groupManager->isAdmin($currentUser->getUID());
+		$isDelegatedAdmin = $this->groupManager->isDelegatedAdmin($currentUser->getUID());
+
+		if (!$isAdmin && !$isDelegatedAdmin) {
+			throw new OCSForbiddenException('Logged in user must be an admin or delegated admin');
+		}
 		$groups = $this->groupManager->search($search, $limit, $offset);
 		$groups = array_values(array_map(function ($group) {
 			/** @var IGroup $group */