fix(groups): Fix more psalm issues

Signed-off-by: Joas Schilling <coding@schilljs.com>

Author: nickvergessen

build/psalm-baseline.xml

@@ -3931,7 +3931,6 @@
     </LessSpecificReturnStatement>
     <MoreSpecificReturnType>
       <code><![CDATA[\OC\Group\Group[]]]></code>
-      <code><![CDATA[\OC\Group\Group[]]]></code>
     </MoreSpecificReturnType>
     <UndefinedInterfaceMethod>
       <code><![CDATA[createGroup]]></code>

lib/private/Group/Manager.php

@@ -287,7 +287,7 @@ public function search(string $search, ?int $limit = null, ?int $offset = 0) {
 
 	/**
 	 * @param IUser|null $user
-	 * @return \OC\Group\Group[]
+	 * @return array<string, \OCP\IGroup>
 	 */
 	public function getUserGroups(?IUser $user = null) {
 		if (!$user instanceof IUser) {
@@ -298,7 +298,7 @@ public function getUserGroups(?IUser $user = null) {
 
 	/**
 	 * @param string $uid the user id
-	 * @return \OC\Group\Group[]
+	 * @return array<string, \OCP\IGroup>
 	 */
 	public function getUserIdGroups(string $uid): array {
 		$groupIds = $this->getUserIdGroupIds($uid);