Fix Qdrant URL input default value (#3933)

Author: daniel-lxs

webview-ui/src/context/ExtensionStateContext.tsx

@@ -187,7 +187,7 @@ export const ExtensionStateContextProvider: React.FC<{ children: React.ReactNode
 		autoCondenseContextPercent: 100,
 		codebaseIndexConfig: {
 			codebaseIndexEnabled: false,
-			codebaseIndexQdrantUrl: "",
+			codebaseIndexQdrantUrl: "http://localhost:6333",
 			codebaseIndexEmbedderProvider: "openai",
 			codebaseIndexEmbedderBaseUrl: "",
 			codebaseIndexEmbedderModelId: "",