I think so, normally ada separate DB box and isolator switch for prevention.

If battery bakar probably will burn longer, i'm surprise the battery didn't ignite

doesnt matter much, it still burnt anyway.
also just because it is lifepo4, it will not terbakar or just terbakar only on one cell only, it just takes much longer time for the fire to be distributed to another battery cells. the more packed the cell will be, the faster those flame will get passed.