Dashboard: Handle min refresh interval when importing dashboard (#23959)
Dashboard: Handle min refresh interval when importing dashboard (#23959)

If refresh interval is lower than minimum refresh interval
when importing dashboard, use the minimum refresh interval
instead of returning error.

Fixes #23099
grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana