StudentQuiz: Make show all link working with pagination

classes/question/bank/studentquiz_bank_view.php

@@ -579,6 +579,16 @@ public function load_questions() {
         return $questions;
     }
 
+    #[\Override]
+    protected function load_page_questions(): \moodle_recordset {
+        global $DB;
+        if (!$this->pagevars['showall']) {
+            return parent::load_page_questions();
+        } else {
+            return $DB->get_recordset_sql($this->loadsql, $this->sqlparams);
+        }
+    }
+
     /**
      * TODO: rename function and apply (there is duplicate method)
      * @return bool studentquiz is set to anoymize ranking.

tests/behat/pagination.feature

@@ -67,6 +67,11 @@ Feature: Test pagination for StudentQuiz
     # Verify that the first question and the last question are displayed, ensuring all essential questions are visible.
     And I should see "TF 01"
     And I should see "Test question 9"
+    And I click on "Show 20 per page" "link"
+    # Verify that the first question and the last question are displayed, ensuring all essential questions are visible when click show all.
+    And I click on "Show all 25" "link"
+    And I should see "TF 01"
+    And I should see "Test question 24"
 
   @javascript
   Scenario: Users using filter should keep the same pagination.