fix: use DM Sans font without uppercase for explorer title

Author: Factory Bot

cortex-gui/src/components/FileExplorer.tsx

@@ -3179,12 +3179,10 @@ export function FileExplorer(props: FileExplorerProps) {
         <div style={{ display: "flex", "align-items": "center", gap: "4px" }}>
           <span
             style={{
-              "font-family": "var(--figma-font-sans, Inter, sans-serif)",
+              "font-family": "'DM Sans', sans-serif",
               "font-size": "12px",
               "font-weight": "600",
               color: "var(--figma-text-secondary, #A0A0A0)",
-              "text-transform": "uppercase",
-              "letter-spacing": "0.5px",
             }}
           >
             {explorerTitle()}