No and they won't be. 9 of the 12 have been fired by UNRWA, the other 3 are confirmed dead.
That said, Israel's response to the attack has been completely disproportionate and DOES include war crimes including genocide. You'd think that Israel of all nations on the planet would be leery of that one given that the state owes it's very existence to genocide perpetrated against them.
The war is fratricidal, goes back to Abraham and the side of the angels is not self-evident. Sarah treated Hagar and her son abhominably and the Ishmaelites, rightly or wrongly, feel cheated of their birthright given that Ishmael was the ELDER son of Abraham.
Hamas still has hostages. Ishmaelites got/have majority of the land in the region. For peace all they have to do is be peaceful and leave Israel alone.
Also after further reading, these workers already have immunity. UN has to remove it from them. They are not removing the protection and Biden/Harris DOJ is agreeing the UN. Disgusting