restore "?" as VCS_UNTRACKED_ICON in lean and classic styles

internal/wizard.zsh

@@ -1278,6 +1278,7 @@ function generate_config() {
     sub VISUAL_IDENTIFIER_EXPANSION "'\${P9K_VISUAL_IDENTIFIER// }'"
     sub BACKGROUND_JOBS_VISUAL_IDENTIFIER_EXPANSION "'\${P9K_VISUAL_IDENTIFIER// }'"
     sub OS_ICON_CONTENT_EXPANSION "'%B\${P9K_CONTENT// }'"
+    if [[ $style == p9k ]]; then
       uncomment 'typeset -g POWERLEVEL9K_VCS_UNTRACKED_ICON'
       uncomment 'typeset -g POWERLEVEL9K_VCS_UNSTAGED_ICON'
       uncomment 'typeset -g POWERLEVEL9K_VCS_STAGED_ICON'
@@ -1290,6 +1291,7 @@ function generate_config() {
       sub VCS_STASH_ICON "'${icons[VCS_STASH_ICON]// }'"
       sub VCS_INCOMING_CHANGES_ICON "'${icons[VCS_INCOMING_CHANGES_ICON]// }'"
       sub VCS_OUTGOING_CHANGES_ICON "'${icons[VCS_OUTGOING_CHANGES_ICON]// }'"
+    fi
   else
     sub VISUAL_IDENTIFIER_EXPANSION "'\${P9K_VISUAL_IDENTIFIER}'"
     sub BACKGROUND_JOBS_VISUAL_IDENTIFIER_EXPANSION "'\${P9K_VISUAL_IDENTIFIER}'"