Stop the demo build bar from shrinking on mobile/small sizes (#1353)

packages/desktop-client/src/components/DevelopmentTopBar.tsx

@@ -16,6 +16,7 @@ export default function DevelopmentTopBar() {
           backgroundColor: colors.y8,
           borderBottom: `1px solid ${colors.y6}`,
           zIndex: 1,
+          flexShrink: 0,
         },
       ]}
     >

upcoming-release-notes/1353.md

@@ -0,0 +1,6 @@
+---
+category: Bugfix
+authors: [j-f1]
+---
+
+Prevent the “This is a demo build of Actual” bar from shrinking on small screen sizes