Migrate Assault Preemptive Strike to new assault framework

[Lydya-nick77]

I affirm:

• I understand that if I do not agree to the following points by completing the checkboxes my PR will be ignored.
• I understand I should leave resolving conversations to the LandSandBoat team so that reviewers won't miss what was said.
• I have read and understood the Contributing Guide and the Code of Conduct.
• I have tested my code and the things my code has changed since the last commit in the PR and will test after any later commits.

What does this pull request do?

Migration of the Assault to the new framework.
Remove a double _1g2.lua in npc_list.sql
Corrected the loot from the Ancient lockbox

Steps to test these changes

Get the KI to enter the Assault, kill all the Mamool Ja Excutionner