Keep the keyboard input-source icon visible

The hiding boundary sat right of the input-source indicator, so the
hamburger took the slot where the language icon had been. Move the
boundary left of it so the language icon stays, with the hamburger still
at the left edge.

💘 Generated with Crush

Assisted-by: Crush:deepseek-v4.1-flash

build-app.sh

@@ -2,7 +2,7 @@
 set -euo pipefail
 cd "$(dirname "$0")"
 
-VERSION="${1:-0.4.6}"
+VERSION="${1:-0.4.7}"
 
 swift build -c release