Manage asset group expectations in the same way as team expectations

[savacano28]

Description

In the current system, the expectations generated for asset groups and their assets do not fill the "asset group" column for every asset expectation. This is different from the behavior with teams, where for each player expectation, the "team" column is filled with the ID of the player's parent team.

If we set the asset group for each asset expectation (if applicable), when an asset group is deleted, we will clean up the associated expectations.

To verify:

• The global score query needs to filter on assets, asset groups, and teams.
• We need to apply a migration script to update the expectations with the latest changes

[RomuDeuxfois]

Usefull to improv performance.