feat(ltx2): add text_connector to sharding config

Author: Perseus14

src/maxdiffusion/configs/ltx2_video.yml

@@ -68,6 +68,7 @@ sharding:
   transformer: 'default'
   vae: 'default'
   text_encoder: 'default'
+  text_connector: 'default'
 
 dcn_data_parallelism: 1  # recommended DCN axis to be auto-sharded
 dcn_fsdp_parallelism: -1