fix 4 optimize systemMsg and model default config values

src/Commerce/CommerceQueryParser.php

@@ -205,13 +205,8 @@ final readonly class CommerceQueryParser
             ) ?? $text;
         }
 
-        if ($brand !== null && $brand !== '' && !$this->isBrandPartOfModelPhrase($prompt, $brand)) {
-            $text = preg_replace(
-                $this->config->buildExactTokenRemovalPattern($brand),
-                ' ',
-                $text
-            ) ?? $text;
-        }
+        // Keep known brand terms in the shop search text because the Store API
+        // request does not add a separate manufacturer filter.
 
         if ($priceMin !== null || $priceMax !== null) {
             foreach ($this->config->getPriceRemovalPatterns($this->intentConfig) as $pattern) {