branch-2.1: [bugfix](query) Fix for incorrect query results of variant type #51651 (#51707)

### What problem does this PR solve?

Cherry-picked from #51651

### Release note

None

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    - [ ] Yes. <!-- Explain the behavior change -->

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fe/fe-core/src/main/java/org/apache/doris/nereids/rules/analysis/LogicalResultSinkToShortCircuitPointQuery.java

@@ -65,6 +65,9 @@ public class LogicalResultSinkToShortCircuitPointQuery implements RewriteRuleFac
             return false;
         }
         OlapTable olapTable = olapScan.getTable();
+        if (olapTable.hasVariantColumns()) {
+            return false;
+        }
         return olapTable.getEnableLightSchemaChange() && olapTable.getEnableUniqueKeyMergeOnWrite()
                         && olapTable.storeRowColumn();
     }