pick from master #38135
explain shape plan select * from table2 where Null; explain shape plan
select * from table2 where false; in this case, null literal can be
regard as same as false literal
eliminate empty relations for following patterns:
topn->empty
sort->empty
distribute->empty
project->empty
(cherry picked from commit 8340f23946c0c8e40510ce937acd3342cb2e28b7)
## Proposed changes
Issue Number: close #xxx
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