message: fix: Redirects old Explore URLs to the new one
diff: @@ -752,6 +752,9 @@ class Superset(BaseSupersetView): # pylint: disable=too-many-public-methods
  "This API endpoint is deprecated and will be removed in version 3.0.0",
  self.__class__.__name__,
  )
  + if request.method == "GET":
  + return redirect(request.url.replace("/superset/explore", "/explore"))
  +
  initial_form_data = {}
  form_data_key = request.args.get("form_data_key")
  