Bug - Sidebar - Hidden on smaller screens

Describe the problem
Sidebars will not be visible on the page when using a smaller screen and isManagedSidebar is false on the Page.

How do you reproduce the problem?
This can be seen on the PatternFly website: https://www.patternfly.org/components/page#vertical-navigation

1. Reduce the size of the browser window until the sidebar automatically closes
2. Click the hamburger button to try to open it again
3. The sidebar does not open

Expected behavior
The sidebar should appear on the page as it does when using isManagedSidebar on a small screen.

Is this issue blocking you?
We cannot update our mobile app to the newest version of PatternFly due to this.

Screenshots
Before opening:

After trying to open: (Note part of the sidebar appearing on the left)

What is your environment?

• OS: Linux
• Browser: Firefox
• Version: 149.0.2

What is your product and what release date are you targeting?

Any other information?

Jira Issue: PF-4262

先从 Page 组件及其侧边栏行为入手，然后缩小浏览器并使用汉堡按钮，复现 PatternFly 垂直导航示例中的问题。当 isManagedSidebar 为 false 时，侧边栏能在较小的屏幕上打开，并与其为 true 时的行为一致，即视为完成。