fix: default is forced to set gpt-3.5-turbo if no server default model have been set

app/store/access.ts

@@ -204,8 +204,8 @@ export const useAccessStore = createPersistStore(
         .then((res) => {
           // Set default model from env request
           let defaultModel = res.defaultModel ?? "";
-          DEFAULT_CONFIG.modelConfig.model =
-            defaultModel !== "" ? defaultModel : "gpt-3.5-turbo";
+          if (defaultModel !== "")
+            DEFAULT_CONFIG.modelConfig.model = defaultModel;
           return res;
         })
         .then((res: DangerConfig) => {