[change](index) change enable_create_bitmap_index_as_inverted_index default to true (#36692)

When an user create a new BITMAP INDEX, an INVERTED INDEX will be
created instead, since INVERTED INDEX is ready to replace BITMAP INDEX.
The transformation is transparent to user and nothing need to be done by
user. Already existed BITMAP INDEX will NOT be changed and can be used
as before.

Author: xiaokang

fe/fe-common/src/main/java/org/apache/doris/common/Config.java

@@ -2757,7 +2757,7 @@ public static int metaServiceRpcRetryTimes() {
     public static boolean enable_light_index_change = true;
 
     @ConfField(mutable = true, masterOnly = true)
-    public static boolean enable_create_bitmap_index_as_inverted_index = false;
+    public static boolean enable_create_bitmap_index_as_inverted_index = true;
 
     @ConfField(mutable = true)
     public static boolean enable_create_inverted_index_for_array = false;