Fix erroneous query manipulation

When a user creates a cell, they can create an InfluxQL query with the
visual query builder. In this case, the query to execute is derived from
the cell's query config. They can also enter a query manually, in which
case the query config should be ignored.

If a user enters a query manually, we attempt to parse that query into a
query config. If we are successful, then it doesn't matter whether we
execute the query that was entered manually, or the query derived from
the query config.

We can't always parse a query back into a query config, but we
nonetheless have always been executing cell queries derived from a query
config. This created the issue witnessed in #5131.

This commit changes that behavior; if a query has been entered manually,
we will always respect it.

Closes #5131

ui/src/dashboards/components/Dashboard.js

@@ -30,6 +30,10 @@ const Dashboard = ({
       ...q,
       database: q.db,
       text: q.query,
+      queryConfig: {
+        ...q.queryConfig,
+        rawText: q.query,
+      },
     }))
     return dashboardCell
   })