UnsignedLongTests for the range agg was  using very specific intervals
that double type can not distinguish due to lack of precision:

9.223372036854776000E18 == 9.223372036854775807E18 returns true

If we add the corresponding range query test, it will return different
number of hits than the range agg, as range query unlike range agg
doesn't convert valued to double type, and hence more precise.

This patch make broader ranges for the range agg test (so values
converted to doubles don't loose precision), and hence corresponding
range query will return the same number of hits.

Relates to elastic#60050