Unable to delete device

[squatica]

Describe the bug

Trying to delete a device is throwing an error (if your account is on matrix.org).

Reproduction

• have an account on matrix.org
• login from an anonymous browser window
• do NOT verify the session
• close the window (lose the session)
• all other sessions will be now showing a warning about unverified device
• try to delete that device - fails with error 404, enjoy your new permanent warning

Expected behavior

No response

Platform and versions

Cinny 4.8.0

Additional context

This is caused by the new OIDC authentication deployed on matrix.org (matrix-org/matrix-spec-proposals#3861) - breaking the specs (https://spec.matrix.org/v1.14/client-server-api/#delete_matrixclientv3devicesdeviceid). But it suggests the api for deleting device will be deprecated, so a new way for deleting device will be needed soon anyway (matrix-org/matrix-spec-proposals#3824).

Currently the workaround for matrix.org is to go to https://account.matrix.org/ and delete the device there.