Feature/v2/right rail (#4255)

# Description of Changes

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Please provide a summary of the changes, including:

- What was changed
- Why the change was made
- Any challenges encountered

Closes #(issue_number)
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---

## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.

---------

Co-authored-by: ConnorYoh <[email protected]>
Co-authored-by: Anthony Stirling <[email protected]>

frontend/src/components/pageEditor/BulkSelectionPanel.tsx

@@ -1,5 +1,5 @@
 import React from 'react';
-import { Paper, Group, TextInput, Button, Text } from '@mantine/core';
+import { Group, TextInput, Button, Text } from '@mantine/core';
 
 interface BulkSelectionPanelProps {
   csvInput: string;
@@ -15,7 +15,7 @@ const BulkSelectionPanel = ({
   onUpdatePagesFromCSV,
 }: BulkSelectionPanelProps) => {
   return (
-    <Paper p="md" mb="md" withBorder>
+    <>
       <Group>
         <TextInput
           value={csvInput}
@@ -35,7 +35,7 @@ const BulkSelectionPanel = ({
           Selected: {selectedPages.length} pages
         </Text>
       )}
-    </Paper>
+      </>
   );
 };