pgsql: Unbreak index optimization for LIKE on bytea

Unbreak index optimization for LIKE on bytea

The same code is used to handle both text and bytea, but bytea is not
collation-aware, so we shouldn't call get_collation_isdeterministic()
in that case, since that will error out with an invalid collation.

Reported-by: Jeevan Chalke <jeevan.chalke@enterprisedb.com>
Discussion: /messages/by-id/CAM2+6=Waf3qJ1=yVTUH8_yG-SC0xcBMY+SFLhvKKNnWNXSUDBw@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/abb9c63b2c00109183cdb9f588d2f23fc383ed38

Modified Files
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src/backend/utils/adt/like_support.c | 4 +++-
src/test/regress/expected/strings.out | 16 ++++++++++++++++
src/test/regress/sql/strings.sql | 13 +++++++++++++
3 files changed, 32 insertions(+), 1 deletion(-)