pgsql: Fix object name clash in recently introduced test

Fix object name clash in recently introduced test

c0fc0751862 wasn't careful about naming the DOMAIN used in some new
tests in sqljson_queryfunc.sql so as not to clash with the name of a
DOMAIN used in the nearby sqljson_jsontable.sql.  Fix by using a
different name for the newly added DOMAIN in sqljson_queryfuncs.sql.

Per buildfarm members canebrake and urutu.

Discussion: https://postgr.es/m/CA+HiwqEjkbDxqqD3VJamc6R9+B102H7=SFYYOM7gKrxzJO35TQ@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/2c7cea5a8e741b7f7f9f12700d59b49b376301a1

Modified Files
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src/test/regress/expected/sqljson_queryfuncs.out | 18 +++++++++---------
src/test/regress/sql/sqljson_queryfuncs.sql      | 14 +++++++-------
2 files changed, 16 insertions(+), 16 deletions(-)