fix: improve home directory expansion handling in ash shell script

Co-Authored-By: Paul Kuruvilla <[email protected]>

internal/test_helpers/ash/your_shell.sh

@@ -17,6 +17,10 @@ while true; do
     if [ "$command" = "echo" ] && echo "$*" | grep -q "'\''.*\\\\\\\\n.*'\''"; then
         # Execute echo with preserved quotes
         echo "$*"
+    elif [ "$command" = "cd" ]; then
+        # Handle home directory expansion for cd
+        args=$(echo "$*" | sed "s|^~/|$HOME/|;s|^~$|$HOME|")
+        cd "$args" 2>&1
     else
         # Try to execute command and handle errors
         if ! command -v "$command" >/dev/null 2>&1; then