minecraft-launcher: drop private-opt comment and move whitelist

etc/profile-m-z/minecraft-launcher.profile

@@ -25,6 +25,7 @@ include disable-xdg.inc
 
 mkdir ${HOME}/.minecraft
 whitelist ${HOME}/.minecraft
+whitelist /opt/minecraft-launcher
 include whitelist-common.inc
 include whitelist-runuser-common.inc
 include whitelist-usr-share-common.inc
@@ -51,10 +52,7 @@ private-dev
 # If multiplayer or realms break, add 'private-etc <your-own-java-folder-from-/etc>'
 # or 'ignore private-etc' to your minecraft-launcher.local.
 private-etc @tls-ca,@x11,host.conf,java*,mime.types,services,timezone
-# private-opt breaks file-copy-limit, use a whitelist instead of draining RAM
-# https://github.com/netblue30/firejail/discussions/5307
-#private-opt minecraft-launcher
-whitelist /opt/minecraft-launcher
+private-opt minecraft-launcher
 private-tmp
 
 dbus-user none