🐛(frontend) keep editor mounted when resize window

When resizing the window and crossing the desktop
breakpoint, the editor was unmounted. It could
lead to loss of data if there were unsaved changes,
and tiptap crash if the toolbar was used while the
editor was unmounted.
It was caused by the ResizableLeftPanel component
which was rerendering the editor.
We now keep the editor mounted when resizing
the window, by keeping the ResizableLeftPanel
component rendered but setting its size to 0
and disabling the resize handle.

CHANGELOG.md

@@ -21,6 +21,7 @@ and this project adheres to
 ### Fixed
 
 - 🐛(nginx) fix / location to handle new static pages
+- 🐛(frontend) rerendering during resize window #1715
 
 ## [4.0.0] - 2025-12-01