fixed empty scroll track in citations dropdown (#4685)

* fixed empty scroll track

* use overflow-x-none instead of overflow-x-auto for citation list

* keep behaviour of x scroll, but hide scrollbar since it can be overflowing for no reason

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Co-authored-by: Timothy Carambat <rambat1010@gmail.com>

frontend/src/components/WorkspaceChat/ChatContainer/ChatHistory/Citation/index.jsx

@@ -69,7 +69,7 @@ export default function Citations({ sources = [] }) {
         />
       </button>
       {open && (
-        <div className="flex flex-wrap flex-col items-start overflow-x-scroll mt-1 ml-14 gap-y-2">
+        <div className="flex flex-wrap flex-col items-start overflow-x-scroll no-scroll mt-1 ml-14 gap-y-2">
           {combineLikeSources(sources).map((source) => (
             <Citation
               key={v4()}