games/anki: Update to 25.07.2

• Since version 25.07, "uv" is required in conjunction with py-hatchling for creating the Python wheels. This replaces the previous Python packaging process, which was mainly managed via the supplied "runner" build framework.

• Also complete the fix from 3c83809b8fe3 by replacing the remaining errorneous SET_ENV with SETENV.

Changelogs since 25.2.7:

https://github.com/ankitects/anki/releases/tag/25.07.2
https://github.com/ankitects/anki/releases/tag/25.07.1
https://github.com/ankitects/anki/releases/tag/25.07

MFH: No (feature release)