No, applicants are not required to disclose their disability during job application processes.
Disclosing your disability as a job applicant can be a really scary prospect. Candidates are often worried that doing so would negatively impact their job applications.
This is why it’s so important for employers to signal as clearly as possible that you want to support candidates in their applications and provide any adjustments that they may need to the process. Otherwise, candidates will not be able to put their best selves forward.