Make Explore panel link work when grafana served from sub url (#22202)

* Make explore url work when grafana served from sub url

* Update public/app/core/utils/explore.ts

public/app/core/utils/explore.ts

@@ -108,8 +108,7 @@ export async function getExploreUrl(args: GetExploreUrlArguments) {
     const exploreState = JSON.stringify({ ...state, originPanelId: panel.id });
     url = renderUrl('/explore', { left: exploreState });
   }
-  const finalUrl = config.appSubUrl + url;
-  return finalUrl;
+  return url;
 }
 
 export function buildQueryTransaction(