add request_name to src_graphql_field_seconds metric
Created by: slimsag
This is needed to support #9986 I mistakenly thought this metric already included request_name because of its large cardinality, but I was wrong.
This increases the cardinality of this metric by 1, so we will now have 1802 unique time series. This is already down from 2500 unique time series thanks to my earlier change in #9895
Additionally, to reduce risk here further since this is a last-minute change, I have reduced the cardinality of that metric even further to guarantee this change is safe.
- Before: 1800 unique time series in
src_graphql_field_seconds
- After: 1569
This was done by excluding some GraphQL types that are generally useless (just data storage and without any computation).