Do not always consume the mouse wheel

As both the page and the editor can have a scrollbar, the editor should
not always consume it. This allows for scrolling the page when the
editor has reached its limits.

When we opt for a stretching editor without scroll, we will still need
this option anyway.

Author: Kevinjil

webapp/src/Twig/TwigExtension.php

@@ -872,6 +872,7 @@ public function codeEditor(
         const editor = monaco.editor.create(element, {
             value: content,
             scrollbar: {
+                alwaysConsumeMouseWheel: false,
                 vertical: 'auto',
                 horizontal: 'auto'
             },
@@ -972,6 +973,7 @@ public function showDiff(string $id, SubmissionFile $newFile, SubmissionFile $ol
         const diffEditor = monaco.editor.createDiffEditor(
             document.getElementById("__EDITOR__"), {
             scrollbar: {
+                alwaysConsumeMouseWheel: false,
                 vertical: 'auto',
                 horizontal: 'auto'
             },