Add pagination for submissions on a backend (fix count for shares)

Signed-off-by: Kostiantyn Miakshyn <molodchick@gmail.com>

Author: Koc

lib/Controller/ApiController.php

@@ -1167,8 +1167,9 @@ public function getSubmissions(int $formId, ?string $query = null, ?int $limit =
 			$submissions = $this->submissionService->getSubmissions($formId, null, $query, $limit, $offset);
 			$totalSubmissionsCount = $this->submissionMapper->countSubmissions($formId, null, $query);
 		} else {
-			$submissions = $this->submissionService->getSubmissions($formId, $this->currentUser->getUID(), $query, $limit, $offset);
-			$totalSubmissionsCount = $this->submissionMapper->countSubmissions($formId, null, $query);
+			$userId = $this->currentUser->getUID();
+			$submissions = $this->submissionService->getSubmissions($formId, $userId, $query, $limit, $offset);
+			$totalSubmissionsCount = $this->submissionMapper->countSubmissions($formId, $userId, $query);
 		}
 		$questions = $this->formsService->getQuestions($formId);