Fix Approval UI showing up for free plan

What does this MR do?

Approval related UI are showing for free plan projects in

• MR edit page
• MR show page widget

This MR hides those UI elements for free plan projects.

What are the relevant issue numbers?

Closes #9908 (closed)

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated via this MR
• Documentation reviewed by technical writer or follow-up review issue created
• Tests added for this feature/bug
• Tested in all supported browsers
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the database guides
• Link to e2e tests MR added if this MR has Requires e2e tests label. See the Test Planning Process.
• EE specific content should be in the top level /ee folder
• For a paid feature, have we considered GitLab.com plans, how it works for groups, and is there a design for promoting it to users who aren't on the correct plan?

app/assets/javascripts/behaviors/markdown/copy_as_gfm.js

@@ -173,7 +173,9 @@ export class CopyAsGFM {
         wrapEl.appendChild(node.cloneNode(true));
         const doc = DOMParser.fromSchema(schema.default).parse(wrapEl);
 
-        const res = markdownSerializer.default.serialize(doc);
+        const res = markdownSerializer.default.serialize(doc, {
+          tightLists: true,
+        });
         return res;
       })
       .catch(() => {});