fix(openrouter): de-duplicate tool merging logic (#923)

Co-authored-by: TJ Miller <tj@themillers.co>

Author: oleghalin

src/Providers/OpenRouter/Concerns/BuildsRequestOptions.php

@@ -27,15 +27,10 @@ protected function buildRequestOptions(TextRequest|StructuredRequest $request, a
             'temperature' => $request->temperature(),
             'top_p' => $request->topP(),
             'max_tokens' => $request->maxTokens(),
+            'tools' => ToolMap::map($request->tools()),
+            'tool_choice' => ToolChoiceMap::map($request->toolChoice()),
         ]));
 
-        if ($request instanceof TextRequest) {
-            $options = array_merge($options, Arr::whereNotNull([
-                'tools' => ToolMap::map($request->tools()),
-                'tool_choice' => ToolChoiceMap::map($request->toolChoice()),
-            ]));
-        }
-
         return Arr::whereNotNull(array_merge($options, $additional));
     }
 }