fix(9656): Use absolute paths for a2enmod, a2enconf for debain setup script (#9815)

Reason: On debian, it does not have `/usr/sbin` in the path environment variable anymore.

Co-authored-by: rztrainlocal <ke@KE-U758.HOME>

Author: rztrainlocal

pkg/linux/setup-web.sh

@@ -112,8 +112,8 @@ if [ ${IS_DEBIAN} == 1 ]; then
 
     case ${RESPONSE} in
         y|Y )
-            a2enmod wsgi 1> /dev/null
-            a2enconf pgadmin4 1> /dev/null
+            /usr/sbin/a2enmod wsgi 1> /dev/null
+            /usr/sbin/a2enconf pgadmin4 1> /dev/null
             ;;
         * )
             exit 1;;