ProxySQL Instance Summary dashboard is missing filtering by node names

Most of the panels use expression like the one below, without filtering any instance:

1. "expr": "rate(proxysql_mysql_command_counter_latency_milliseconds_count[$interval])",

    

And it would be expected that panels are filtered by the currently select proxysql instance, like below:    

1. "expr": "rate(proxysql_mysql_command_counter_latency_milliseconds_count{instance=\"$proxysql\"}[$interval])",

And it would also be nice to add a hostgroup filter where applicable.