Draft: Add new L1 items for all-hadronic di-higgs (4b, bbtt) chains (!70956) · Merge requests · atlas / athena

Fixes one problem from

(moving the primary HH4b chain to the Physics stream)

and follows up on adding new L1 items for

Marked Draft until I can figure out how to properly add new L1 thresholds to the menu. I hope @gipezzul and @lidiaz can give some advice there.

Draft: Add new L1 items for all-hadronic di-higgs (4b, bbtt) chains