Update projected-range.json (#1678)

Fixes #1460. Shouldn't happen, but API errors happen so added wraping /w nullif and added to having not null to exclude bad data.

grafana/dashboards/projected-range.json

@@ -139,7 +139,7 @@
           "hide": false,
           "metricColumn": "none",
           "rawQuery": true,
-          "rawSql": "SELECT\n\t$__timeGroup(date, [[interval]]) AS time,\n\tconvert_km((sum([[preferred_range]]_battery_range_km) / sum(coalesce(usable_battery_level,battery_level)) * 100)::numeric, '$length_unit') AS \"Projected [[preferred_range]] range [$length_unit]\"\nFROM\n\t(\n    select battery_level, usable_battery_level, date,\n      rated_battery_range_km, ideal_battery_range_km, outside_temp\n    from positions\n    where\n      car_id = $car_id and $__timeFilter(date) and ideal_battery_range_km is not null\n    union all\n    select battery_level, coalesce(usable_battery_level,battery_level) as usable_battery_level, date,\n      rated_battery_range_km, ideal_battery_range_km, outside_temp\n    from charges c\n    join\n      charging_processes p ON p.id = c.charging_process_id \n    where\n      $__timeFilter(date) and p.car_id = $car_id\n    ) as data\n\nGROUP BY\n\t1\nORDER BY\n\t1,2  DESC",
+          "rawSql": "SELECT\n\t$__timeGroup(date, [[interval]]) AS time,\n\tconvert_km((sum([[preferred_range]]_battery_range_km) / nullif(sum(coalesce(usable_battery_level,battery_level)),0) * 100)::numeric, '$length_unit') AS \"Projected [[preferred_range]] range [$length_unit]\"\nFROM\n\t(\n    select battery_level, usable_battery_level, date,\n      rated_battery_range_km, ideal_battery_range_km, outside_temp\n    from positions\n    where\n      car_id = $car_id and $__timeFilter(date) and ideal_battery_range_km is not null\n    union all\n    select battery_level, coalesce(usable_battery_level,battery_level) as usable_battery_level, date,\n      rated_battery_range_km, ideal_battery_range_km, outside_temp\n    from charges c\n    join\n      charging_processes p ON p.id = c.charging_process_id \n    where\n      $__timeFilter(date) and p.car_id = $car_id\n    ) as data\n\nGROUP BY\n\t1\nhaving convert_km((sum([[preferred_range]]_battery_range_km) / nullif(sum(coalesce(usable_battery_level,battery_level)),0) * 100)::numeric, '$length_unit') is not null\nORDER BY\n\t1,2  DESC",
           "refId": "A",
           "select": [
             [