Fix keyframe copy-pasting on qt6
Qt6 made the size type of a QList configurable, and by default it is a
long long, so the byte alignment of the data was completely broken in
the clipboard.
Test Plan
- Build with Qt6
- Open an animated project
- Copy a keyframe
- Paste a keyframe
- Pasting works properly
Formalities Checklist
- I confirmed this builds.
- I confirmed Krita ran and the relevant functions work.
- I tested the relevant unit tests and can confirm they are not broken. (If not possible, don't hesitate to ask for help!)
- I made sure my commits build individually and have good descriptions as per KDE guidelines.
- I made sure my code conforms to the standards set in the HACKING file.
- I can confirm the code is licensed and attributed appropriately, and that unattributed code is mine, as per KDE Licensing Policy.
- Does the patch add a user-visible feature? If yes, is there a documentation MR ready for it at Krita Documentation Repository?
Reminder: the reviewer is responsible for merging the patch, this is to ensure at the least two people can build the patch. In case a patch breaks the build, both the author and the reviewer should be contacted to fix the build. If this is not possible, the commits shall be reverted, and a notification with the reasoning and any relevant logs shall be sent to the mailing list, kimageshop@kde.org.
Edited by Luna Lovecraft