pgsql: Fix handling of multi-column BRIN indexes

Fix handling of multi-column BRIN indexes

When evaluating clauses on multiple scan keys of a multi-column BRIN
index, we can stop processing as soon as we find a scan key eliminating
the range, and the range should not be added to tbe bitmap.

That's how it worked before 14, but since a681e3c107a the code treated
the range as matching if it matched at least the last scan key.

Backpatch to 14, where this code was introduced.

Backpatch-through: 14
Discussion: https://postgr.es/m/ebc18613-125e-60df-7520-fcbe0f9274fc%40enterprisedb.com

Branch
------
REL_14_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/f3daa3116fad6aa85686aba5b54eaecc07e8f6cf

Modified Files
--------------
src/backend/access/brin/brin.c | 7 +++++++
1 file changed, 7 insertions(+)