genlist : fix size hash issue when genlist layout sizing evaluated

Summary :
When genlist compressed, size width must updated after sizing eval,
but still hash is not changed after sizing eval, so wrong width are
applied.

so when sizing eval called, free all buckets to get updated width.

@fix

legacy/elementary/src/lib/elm_genlist.c

@@ -849,6 +849,8 @@ _elm_genlist_elm_layout_sizing_eval(Eo *obj, Elm_Genlist_Data *sd)
              Item_Block *itb;
 
              sd->prev_viewport_w = vw;
+             /* Free all buckets for updaing changed width */
+             eina_hash_free_buckets(sd->size_caches);
 
              EINA_INLIST_FOREACH(sd->blocks, itb)
                {