Fix blank error message when using Serial on Firefox (#1254)

* add checks for both bluetooth and serial in the FeatureErrorMessage logic

* move the check further down and only show if neither needsSecureContext and needsFeature are empty

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Co-authored-by: Hunter275 <hunterthor275@gmail.com>

apps/web/src/components/Dialog/AddConnectionDialog/AddConnectionDialog.tsx

@@ -115,6 +115,10 @@ const FeatureErrorMessage = ({ missingFeatures, tabId }: FeatureErrorProps) => {
         ? "Web Serial"
         : undefined;
 
+  if (!needsFeature && !needsSecureContext) {
+    return null;
+  }
+
   return (
     <div className="flex flex-col items-start gap-2 bg-red-500 p-4 rounded-md text-sm mt-4">
       <div className="flex items-center gap-2 w-full">