sidebar: hide frontmatter not respected on mobile orientation change (portrait to landscape)

[steveayon]

Bug Description

When using sidebar: hide in page frontmatter, the sidebar appears unexpectedly on mobile devices when rotating from portrait to landscape orientation.

Steps to Reproduce

1. Create a page with sidebar: hide in the frontmatter
2. Open the deployed site on a mobile device in portrait orientation
3. Verify the sidebar is hidden (expected behavior)
4. Rotate the device to landscape orientation
5. Observe that the sidebar appears despite sidebar: hide setting

Expected Behavior

The sidebar should remain hidden when sidebar: hide is set in frontmatter, regardless of device orientation or screen size changes.

Actual Behavior

The sidebar appears when rotating from portrait to landscape on mobile devices, overriding the sidebar: hide setting.

Environment

• Device: Mobile
• Deployment: Azure Static Web Apps (production build)

Example Configuration

Page frontmatter:

---
title: Status & Change Summary
sidebar: hide
---

Workaround

Using the global hideSidebar={true} prop on EvidenceDefaultLayout appears to work more reliably, but this affects all pages rather than individual pages.

Additional Context

This appears to be a responsive breakpoint issue where the page-level sidebar: hide setting is overridden when the viewport width increases during orientation change.