Fix build: use as any for SyntaxHighlighter style prop

Matches the cast used in ChatUI.tsx — the react-syntax-highlighter
type definitions don't accept CSSProperties directly.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ui/litellm-dashboard/src/components/playground/chat_ui/ChatMessageBubble.tsx

@@ -143,7 +143,7 @@ function ChatMessageBubble({
                     const match = /language-(\w+)/.exec(className || "");
                     return !inline && match ? (
                       <SyntaxHighlighter
-                        style={coy as Record<string, React.CSSProperties>}
+                        style={coy as any}
                         language={match[1]}
                         PreTag="div"
                         className="rounded-md my-2"