[Development] Why qrc's metadatas is the big endian?

[弓 长]

Hi, I don't find one document of reason about the design, I found this patch: https://codereview.qt-project.org/c/qt/qtbase/+/177353 , apparently it was big endian before that.
The reality is that little endian is more commonly used in local environments, so I wonder why we don't default to little endian?
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