Dell model capability patch (#4719)

Author: timothycarambat

server/utils/helpers/customModels.js

@@ -713,7 +713,9 @@ async function getDellProAiStudioModels(basePath = null) {
       .then((results) => results.data)
       .then((models) => {
         return models
-          .filter((model) => model.capability === "TextToText") // Only include text-to-text models for this handler
+          .filter(
+            (model) => model?.capability?.includes("TextToText") // Only include text-to-text models for this handler
+          )
           .map((model) => {
             return {
               id: model.id,