server : allow specifying reasoning_format in HTTP request (#15238)

tools/server/webui/src/utils/app.context.tsx

@@ -209,6 +209,7 @@ export const AppContextProvider = ({
         messages,
         stream: true,
         cache_prompt: true,
+        reasoning_format: 'none',
         samplers: config.samplers,
         temperature: config.temperature,
         dynatemp_range: config.dynatemp_range,