Context was not implemented

[purnendudash]

https://github.com/examus/moodle-availability_examus2/blob/3658279f698a6c0e72f5d8caf427ab0ebc7e57ee/api.php#L38

Context needs to be implemented here - https://moodledev.io/docs/apis/subsystems/external/security#validating-access-to-the-moodle-context

as doing lots of read write operation here.

[evsoldatkin]

Fixed in "issues 2024-1" commit