Require the registries this renderer's callers read

The AI tab included this without confform.php and referenced a constant from
it, which is a fatal, which is a blank page.

Plugin/unraid/include/confui.php

@@ -58,6 +58,12 @@
 //   css/varaverk.css       the vv-cf-* family these classes belong to
 // ═══════════════════════════════════════════════════════════════════════════════════════════════
 
+// Required, not assumed. This file emits the renderer for fields that confform.php parses, and
+// the pages that include it also read its registries — VV_UI_SECTION_SURFACES among them. Left to
+// whichever page happened to have pulled it in first, that works everywhere it was tested and
+// fatals on the one page that included this without it, which is what took the AI tab blank.
+require_once __DIR__ . '/confform.php';
+
 function vv_conf_ui_assets(): void {
     static $done = false;
     if ($done) return;