Add map_index_template support for mapped task group (#40799)#61975

anishgirianish wants to merge 2 commits intoapache:mainapache/airflow:mainfrom

anishgirianish:support-map-index-template-for-mapped-task-groupsanishgirianish/airflow:support-map-index-template-for-mapped-task-groupsCopy head branch name to clipboard