fix: Add nodeStyle property to input element in GlobalVariableModal component (#4380)

✨ (GlobalVariableModal.tsx): add nodeStyle prop to Input component for custom styling requirements

src/frontend/src/components/GlobalVariableModal/GlobalVariableModal.tsx

@@ -170,6 +170,7 @@ export default function GlobalVariableModal({
                 setValue(e);
               }}
               placeholder="Insert a value for the variable..."
+              nodeStyle
             />
           ) : (
             <Textarea