fix(engine/sqlite): fix grammer to avoid missing join_constraint #2732
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close #2729
ANTLR's API has difficulty handling the case where there is no join_constraint corresponding to join_operator in join_clause, so an empty join_constraint is accepted.
It is defined as such in the sqlite documentation.
https://www.sqlite.org/syntax/join-clause.html
https://www.sqlite.org/syntax/join-constraint.html