[fix](planner)use base index if the where clause is a constant value (#18367)

sql : select bitmap_empty() from d_table where true;
should always use base index instead of any mv, because the conjuncts is constant (true) and use none of the column from any mv

fe/fe-core/src/main/java/org/apache/doris/planner/OlapScanNode.java

@@ -474,7 +474,9 @@ public class OlapScanNode extends ScanNode {
             if (mvColumn == null) {
                 boolean isBound = false;
                 for (Expr conjunct : conjuncts) {
-                    if (conjunct.isBound(slotDescriptor.getId())) {
+                    List<TupleId> tids = Lists.newArrayList();
+                    conjunct.getIds(tids, null);
+                    if (!tids.isEmpty() && conjunct.isBound(slotDescriptor.getId())) {
                         isBound = true;
                         break;
                     }

regression-test/data/mv_p0/where/k123/k123.out

@@ -39,3 +39,11 @@
 2	4
 2	4
 
+-- !select_mv_constant --
+\N
+\N
+\N
+\N
+\N
+\N
+

regression-test/suites/mv_p0/where/k123/k123.groovy

@@ -86,4 +86,6 @@ suite ("k123p") {
         contains "(k123p4w)"
     }
     qt_select_mv """select k1,k2+k3 from d_table where k1 = 2 and k4 = "b" order by k1;"""
+
+    qt_select_mv_constant """select bitmap_empty() from d_table where true;"""
 }