fix: applying same fix to rewriteAuthIfMatches

Author: dafuga

src/utils.ts

@@ -163,7 +163,14 @@ function rewriteAuthIfMatches(
 ): PermissionLevelType {
     if (permissionLevel.equals(auth)) {
         return PermissionLevel.from({
-            actor: auth.actor,
+            actor: permissionLevel.actor,
+            permission: newPermission,
+        })
+    }
+    // Also rewrite PlaceholderAuth to use the session's actor with the new permission
+    if (PlaceholderAuth.equals(auth)) {
+        return PermissionLevel.from({
+            actor: permissionLevel.actor,
             permission: newPermission,
         })
     }