Bug#1101694: gjs: test failures on big-endian

[Jeremy Bícha]

I applied the proposed fix from
https://gitlab.gnome.org/GNOME/gjs/-/merge_requests/998

But it doesn't seem to have fully fixed the issue:
https://launchpad.net/~jbicha/+archive/ubuntu/arch/+build/30690072

It's definitely too late now for gjs 1.84 to reach Trixie as we are
basically in Hard Freeze now.

Thank you,
Jeremy Bícha