Fix persistance of frontail prompt

This should make it such that the frontail prompt is persistant rather
that being forgotten every time the tool updates.

Signed-off-by: Ethan Dye <mrtops03@gmail.com>

Author: ecdye

build-image/openhabian.conf

@@ -80,7 +80,7 @@ java_opt=Temurin21
 # osrelease=
 
 # Remember user frontail choice
-# frontail_remove=true
+frontail_remove=false
 
 # install zram per default, set to "disable" to skip installation
 zraminstall=enable