Saving with the ".jp2" extension results in a vertically flipped image

[dgarciabriseno]

Describe the bug

Images get flipped when saving as jp2 files. This was my fault when I added this feature 🎉

To Reproduce

from sunpy.map import Map
m = Map("https://helioviewer.org/jp2/AIA/2024/03/08/304/2024_03_08__00_00_05_123__SDO_AIA_AIA_304.jp2")
m.peek()
m.save("test.jp2")
flipped = Map("test.jp2")
flipped.peek()

See screenshots below

Screenshots

m.peek()

flipped.peek()

System Details

import sunpy sunpy.util.system_info() ============================== sunpy Installation Information ==============================

General ####### OS: Mac OS 14.3.1 Arch: 64bit, (arm) sunpy: 4.0.dev2573+gf79e5d92d Installation path: sunpy.egg-info

Required Dependencies ##################### astropy: 6.0.0 numpy: 1.26.4 packaging: 23.2 parfive: 2.0.2 pyerfa: 2.0.1.1 requests: 2.31.0

Optional Dependencies ##################### sunpy: 4.0.dev2573+gf79e5d92d

Installation method

git checkout

[ayshih]

Notes for posterity:

• Saving JPEG2000 images was implemented in #6153, and that PR really ought to have had the unit test verify the written output (cf. https://github.com/sunpy/sunpy/pull/6153/files#r873841948). That's an unforced error on our part.
• JPEG2000 images were flipped on reading way back in 2014 (#768).