Please ignore the compatibility warning; the resource pack is working.

Added: Versions 1.21.9, 1.21.10

The resource pack file name is incorrect; in fact, the file supports two versions at once: 1.21.9 and 1.21.10. But I found out about this only after the file was published, and when I wanted to release a version for 1.21.10, I learned that this file already supports it. So I updated the file name and its description, but I didn’t change the file name because I didn’t want to resubmit it for review.