Fix histogram name for unsafe_destroy_range (#8660)
Fix histogram name for unsafe_destroy_range (#8660)

Signed-off-by: Xintao <27e2221a3590bdf1c7193b8c94a0212f0bff29a3@live.com>
BusyJay/tikv,pingcap/tikv,BusyJay/tikv,BusyJay/tikv,BusyJay/tikv,c4pt0r/tikv,pingcap/tikv