This accessiblity feature has been requested for AC Valhalla and been the topic of discussions since launch day. There are many options to switch between toggle or hold inputs, for Aim actions, Crouch, Quick wheel actions and even a option to change the ravens vertical controls but still missing the same (toggle/hold) for Sprint actions.
It's annoying when Eivor's sprint action can be interruped by stucking in any random object and have to press the botton every single time to continue spriting which could been solved if there was an optional hold requirement for the sprint action for both controller and keyboard users. Many players who have been requested this feature found him/her-self in the same way in the past almost 2 years.
Please, make this feature into the game which hase been the basics of the previous 9+2 games. (AC, AC2, ACBrotherhood, ACRevelations, AC3, AC3Liberation, AC4, AC4Freedom Cry, ACRogue, ACUnity, ACSyndicate)
https://www.reddit.com/r/assassinscreed/comments/k4galk/ubisoft_please_add_an_option_to_switch_sprinting/
https://discussions.ubisoft.com/topic/77788/hold-to-sprint-option?lang=en-US