fix(server): rework 'revoke all tokens' flow (hattorius)

[Hattorius]

Description

This pull request introduces a new function that plays a crucial role in the operation of the "revoke all tokens" endpoint. The primary purpose of this function is to efficiently iterate through cached authentication tokens and identify and remove all tokens associated with a specific user ID.

It's worth noting that the solution implemented here differs from the one originally discussed in the related issue. Instead, this approach aligns with the approach detailed in the Discord conversation, ensuring a more effective resolution.

Closes #4684

[Hattorius]

Additionally, I'd like to highlight a consideration regarding the function's invocation. There is a potential benefit to removing the await parameter. This change would allow the function to continue iterating through the 20,000 cached tokens while simultaneously providing a response to the user.

By eliminating the await parameter, the function's performance may not see a direct enhancement, but it has the potential to improve the user experience. This way, the system doesn't have to wait for the token removal process to complete before responding to the user, making the operation feel more responsive and user-friendly.

5597666#diff-26fae77e0df373e6d5e5c8c7dc5bac72253613229222ce6e4f96262d62872f2aR901

[fehmer]

lgtm. simple and clean

[Miodec]

Thanks