fix explain it in no pushdown

Signed-off-by: Jialiang Liang <jiallian@amazon.com>

Author: RyanL1997

integ-test/src/test/resources/expectedOutput/calcite_no_pushdown/explain_regex.json

@@ -1 +1 @@
-{"calcite":{"logical":"LogicalSystemLimit(fetch=[10000], type=[QUERY_SIZE_LIMIT])\n  LogicalProject(account_number=[$0], firstname=[$1], address=[$2], balance=[$3], gender=[$4], city=[$5], employer=[$6], state=[$7], age=[$8], email=[$9], lastname=[$10])\n    LogicalSort(fetch=[5])\n      LogicalFilter(condition=[REGEX_MATCH($10, '^[A-Z][a-z]+$':VARCHAR)])\n        CalciteLogicalIndexScan(table=[[OpenSearch, opensearch-sql_test_index_account]])\n","physical":"EnumerableLimit(fetch=[10000])\n  EnumerableCalc(expr#0..16=[{inputs}], proj#0..10=[{exprs}])\n    EnumerableLimit(fetch=[5])\n      EnumerableCalc(expr#0..16=[{inputs}], expr#17=['^[A-Z][a-z]+$':VARCHAR], expr#18=[REGEX_MATCH($t10, $t17)], proj#0..16=[{exprs}], $condition=[$t18])\n        CalciteEnumerableIndexScan(table=[[OpenSearch, opensearch-sql_test_index_account]])\n"}}
+{"calcite":{"logical":"LogicalSystemLimit(fetch=[10000], type=[QUERY_SIZE_LIMIT])\n  LogicalProject(account_number=[$0], firstname=[$1], address=[$2], balance=[$3], gender=[$4], city=[$5], employer=[$6], state=[$7], age=[$8], email=[$9], lastname=[$10])\n    LogicalSort(fetch=[5])\n      LogicalFilter(condition=[REGEXP_CONTAINS($10, '^[A-Z][a-z]+$':VARCHAR)])\n        CalciteLogicalIndexScan(table=[[OpenSearch, opensearch-sql_test_index_account]])\n","physical":"EnumerableLimit(fetch=[10000])\n  EnumerableCalc(expr#0..16=[{inputs}], proj#0..10=[{exprs}])\n    EnumerableLimit(fetch=[5])\n      EnumerableCalc(expr#0..16=[{inputs}], expr#17=['^[A-Z][a-z]+$':VARCHAR], expr#18=[REGEXP_CONTAINS($t10, $t17)], proj#0..16=[{exprs}], $condition=[$t18])\n        CalciteEnumerableIndexScan(table=[[OpenSearch, opensearch-sql_test_index_account]])\n"}}

integ-test/src/test/resources/expectedOutput/calcite_no_pushdown/explain_regex_negated.json

@@ -1 +1 @@
-{"calcite":{"logical":"LogicalSystemLimit(fetch=[10000], type=[QUERY_SIZE_LIMIT])\n  LogicalProject(account_number=[$0], firstname=[$1], address=[$2], balance=[$3], gender=[$4], city=[$5], employer=[$6], state=[$7], age=[$8], email=[$9], lastname=[$10])\n    LogicalSort(fetch=[5])\n      LogicalFilter(condition=[NOT(REGEX_MATCH($10, '.*son$':VARCHAR))])\n        CalciteLogicalIndexScan(table=[[OpenSearch, opensearch-sql_test_index_account]])\n","physical":"EnumerableLimit(fetch=[10000])\n  EnumerableCalc(expr#0..16=[{inputs}], proj#0..10=[{exprs}])\n    EnumerableLimit(fetch=[5])\n      EnumerableCalc(expr#0..16=[{inputs}], expr#17=['.*son$':VARCHAR], expr#18=[REGEX_MATCH($t10, $t17)], expr#19=[NOT($t18)], proj#0..16=[{exprs}], $condition=[$t19])\n        CalciteEnumerableIndexScan(table=[[OpenSearch, opensearch-sql_test_index_account]])\n"}}
+{"calcite":{"logical":"LogicalSystemLimit(fetch=[10000], type=[QUERY_SIZE_LIMIT])\n  LogicalProject(account_number=[$0], firstname=[$1], address=[$2], balance=[$3], gender=[$4], city=[$5], employer=[$6], state=[$7], age=[$8], email=[$9], lastname=[$10])\n    LogicalSort(fetch=[5])\n      LogicalFilter(condition=[NOT(REGEXP_CONTAINS($10, '.*son$':VARCHAR))])\n        CalciteLogicalIndexScan(table=[[OpenSearch, opensearch-sql_test_index_account]])\n","physical":"EnumerableLimit(fetch=[10000])\n  EnumerableCalc(expr#0..16=[{inputs}], proj#0..10=[{exprs}])\n    EnumerableLimit(fetch=[5])\n      EnumerableCalc(expr#0..16=[{inputs}], expr#17=['.*son$':VARCHAR], expr#18=[REGEXP_CONTAINS($t10, $t17)], expr#19=[NOT($t18)], proj#0..16=[{exprs}], $condition=[$t19])\n        CalciteEnumerableIndexScan(table=[[OpenSearch, opensearch-sql_test_index_account]])\n"}}