Do not automatically close the sidebar while the Page Editor is open

[twschiller]

Describe the bug

• If the mod panel is the only panel open, the sidebar automatically closes when saving a mod because the dynamic element is removed from the page and the saved version is added to the page
• Auto-closing is jarring with the Chromium Sidepanel and annoying because you have to re-open the sidebar/re-render the panel to continue working

To Reproduce

Steps to reproduce the behavior:

1. Create a mod package with a sidebar
2. Run the mod so it's the only sidebar panel
3. Make a change and save the mod

Actual behavior

The sidebar is automatically closed

Expected behavior

The sidebar is open to the saved version of the mod you are working on

Discussion

• An alternative approach would be to debounce the hide because the panel will be immediately re-added. However, that would introduce a race condition. Not auto-hiding while the Page Editor is open seems like the easiest approach

Desktop (please complete the following information):

• Browser: Chrome
• Extension Version: 1.8.11

Related Code

• useHideEmptySidebar auto-hides the sidebar if there are no visible panels: https://github.com/pixiebrix/pixiebrix-extension/blob/71182b2a15b942cc70d63587dc8ce5d59411d8cc/src/sidebar/useHideEmptySidebar.ts#L32-L32