I would like to always show a row-action ("edit", "quik-edit","trash","display") in custom pages list in wordpress administation. Not just on hover the title.
I don't understand the codex about that :
https://developer.wordpress.org/reference/classes/wp_list_table/row_actions/
Link which you provided include path to file you should edit.
File: wp-admin/includes/class-wp-list-table.php
In line number 512:
Change the false value to true,
Hope it'll help you.