Function apply_fifo_queue 

pub fn apply_fifo_queue(
    base: &mut Vec<u8>,
    delta: &ArchivedFifoQueueDiff,
    item_ssz_size: usize,
)

Applies a FIFO queue delta in place.

The destination queue is updated by:

1. Removing consumed_count items from the front.
2. Appending the recorded SSZ items to the end.

If consumed_count exceeds the current queue length, the destination queue is cleared before appending.

Complexity

O(queue size + appended bytes)