Files: Switch Default Alt Text to width×height image dimensions order
Summary:
On a File page of an image, currently the "Dimensions" in the sidebar use "width × height", while the "Default Alt Text" under "File Metadata" uses "height × width".
Use "width × height" also for the alt text for the sake of consistency.
Closes T16453
Test Plan: Upload an image file which does not have square dimensions, go to its File page, look at the pixel values under "Dimensions" and "Default Alt Text"
Reviewers: O1 Blessed Committers, mainframe98
Reviewed By: O1 Blessed Committers, mainframe98
Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno
Maniphest Tasks: T16453
Differential Revision: https://we.phorge.it/D26682