[fix](planner)should save original select list item before analyze (#28187)

* [fix](planner)should save original select list item before analyze

* fix test case

* fix failed case

fe/fe-common/src/main/java/org/apache/doris/catalog/ScalarType.java

@@ -616,7 +616,7 @@ public class ScalarType extends Type {
         StringBuilder stringBuilder = new StringBuilder();
         switch (type) {
             case CHAR:
-                if (isWildcardVarchar()) {
+                if (isWildcardChar()) {
                     stringBuilder.append("CHARACTER");
                 } else if (Strings.isNullOrEmpty(lenStr)) {
                     stringBuilder.append("CHAR").append("(").append(len).append(")");