Load workfile fix

[iLLiCiTiT]

Changelog Description

Fix what keys are used from contexts in load workfile.

Testing notes:

1. Load workfile should work.

[jakubjezek001]

still failing to load

Traceback (most recent call last):
  File "C:\CODE\__YNPUT\ayon-core\client\ayon_core\tools\loader\models\actions.py", line 740, in _load_representations_by_loader
    load_with_repre_context(
  File "C:\CODE\__YNPUT\ayon-core\client\ayon_core\pipeline\load\utils.py", line 325, in load_with_repre_context
    return loader.load(repre_context, name, namespace, options)
  File "C:\CODE\__YNPUT\ayon-tvpaint\client\ayon_tvpaint\plugins\load\load_workfile.py", line 56, in load
    task_name = context["task"]["name"]
KeyError: 'task'