gridscan processing should determine the y- and z- coordinate axes from ISPyB data rather than using the ID

Whilst testing release 1.5.7 of Hyperion, which has changes that adjust the ordering of the xy and xz Data Collections such that either one may be the first DataCollection (as sorted by Data Collection ID) it was found that the zocalo results from grid scan processing came back with the y- and z- coordinates of the centres swapped.

When processing the gridscan data, dlstbx should be using the `omegaStart` values to determine which gridscan plane comes from which DataCollection.

首先追蹤 gridscan 的處理路徑，以及 ISPyB DataCollection 記錄的排序和讀取方式。檢查 omegaStart 在哪裡可用，以及 y 和 z 座標中心是如何指派的；當 xy 或 xz DataCollection 按 ID 排在最前面時座標仍然正確，即表示完成。

由索引模型根據 Issue 內容生成。