Static Spans are modified result in wrong plan

Repro:

create index ix1 on default (DISTINCT ARRAY v.id FOR v IN arr1 END);

create index ix2 on default (c1);

EXPLAIN SELECT  d.c1 FROM default AS d WHERE d.c1 IS NOT NULL GROUP BY d.c1;

Above one uses index aggregates.
Run the following statement (there extra predicate v.x so the span will not exact)

EXPLAIN SELECT 1 FROM default AS d WHERE ANY v IN d.arr1 SATISFIES v.id IS NOT NULL AND v.x = 10 END;

Now Rerun. It no longer uses index aggregates. Only option is restart query service.

EXPLAIN SELECT  d.c1 FROM default AS d WHERE d.c1 IS NOT NULL GROUP BY d.c1;

Reason:
There v.id IS NOT NULL , v.id is array index key. It generates _EXACT_VALUED_SPANS (Static span) Later it sets false (https://github.com/couchbase/query/blob/master/planner/sarg_any.go#L116) without making copy. Also at it modifies others https://github.com/couchbase/query/blob/master/planner/sarg_any.go#L87-L97

This can happen any other static spans.

Possible fix is at https://github.com/couchbase/query/blob/master/planner/sarg_any.go#L86
sp = sp.Copy()