Bug: wrong calculate median function

[tiendn]

Problem

Calculate wrong value median

import {median} from '@hyperlane/utils'

const result = median([1,2,3,4])
return result;
// Expected: 2.5
// Actual: 3.5

Additional context
Add any other context or screenshots about the feature request here.

Solution

Reimplement median function at #4753

Related logics

Fetches the median prioritization fee for transfers of the collateralAddress token