Option not to raise when leaving context manager after lock expiration

[julianolm]

Description

I was having trouble using async locks with the context manager because it was failing when exiting the context manager after timeout had expired (even if my code executed successfully).

I would really like not to raise a LockNotOwnedError in the exit of the context manager (if I try to release a lock and it was already "released" then great!).

I understand just changing the behavior would be critical, so I added an option to just behave this way when desired instead.

PR: #3531

[petyaslavova]

Thank you for your contribution, I am already looking at the PR.