fix: prevent loading AutoPrepend on non-templatefile render() calls

AutoPrepend.php

@@ -9,6 +9,13 @@
  * RockFrontend.
  */
 
+// first we check if the currently rendered file matches the $page's templateFile
+// this is to prevent issues when anything uses $files->render() before the
+// page render is triggered (for example using setPageNameReplacements in
+// Site::migrate())
+$templateFile = $this->wire('page')->template->filename;
+if ($templateFile !== $rockfrontend->autoPrependFile) return;
+
 // If page is not set or not a page we exit early.
 // This happens if anything calls wireRenderFile() on init or such.
 // If the page is not available we also don't want to merge any defined variables.

RockFrontend.module.php

@@ -561,7 +561,10 @@ public function assetPath($path): string
    */
   public function autoPrepend($event)
   {
-    $event->object->setPrependFilename($this->path . "AutoPrepend.php");
+    /** @var Templatefile $tpl */
+    $tpl = $event->object;
+    $this->autoPrependFile = (string)$tpl;
+    $tpl->setPrependFilename($this->path . "AutoPrepend.php");
   }
 
   /**