hotfix(snippets): strip double backticks around getTableName() result (#293)

$modx->getTableName() already returns the table name escaped with
backticks (e.g. `modx_ms3_product_files`). PR #282 wrapped it in
another pair of backticks in the SQL template — runtime SQL had
triple backticks and any `includeThumbs` call from msProducts /
msCart / msGetOrder errored out with:

  Error 42000: You have an error in your SQL syntax ... near
  '`` `main` WHERE ...'

Catalog listings using `includeThumbs` returned empty results in
1.11.0-beta1 — see issue #293. Removed the outer backticks around %4$s
in the sprintf template; added a comment so future readers don't add
them back.

Caught early — few downloads of 1.11.0-beta1 yet. Re-tagging the
existing version instead of bumping to 1.11.1-beta1.

Author: TolkIT-team

core/components/minishop3/src/Utils/ProductThumbnailJoin.php

@@ -28,14 +28,18 @@ public static function buildLeftJoinOn(
             return '1 = 0';
         }
 
+        // xPDO::getTableName() already returns the name escaped with backticks
+        // (e.g. "`modx_ms3_product_files`"). DO NOT wrap %4$s in extra backticks
+        // — that produced triple backticks at runtime and an SQL syntax error
+        // on `includeThumbs=...` (regression introduced in #282 / 1.11.0-beta1).
         $filesTable = $modx->getTableName(msProductFile::class);
 
         return sprintf(
             '`%1$s`.product_id = `%2$s`.id'
             . ' AND `%1$s`.parent_id != 0'
             . ' AND `%1$s`.path LIKE \'%%/%3$s/%%\''
             . ' AND `%1$s`.parent_id = ('
-            . 'SELECT `main`.`id` FROM `%4$s` `main`'
+            . 'SELECT `main`.`id` FROM %4$s `main`'
             . ' WHERE `main`.`product_id` = `%2$s`.`id`'
             . ' AND `main`.`parent_id` = 0'
             . ' AND `main`.`type` = \'image\''