radv/ci: Move sample_texture.*_compressed_format_* to faillist for gfx<=9

This turned out to be not a CTS bug but rather hardware bug around the cache handle BCn textures.

It requires significant tracking to detect such cases, and it's likely not worth a workaround since reading a texture as both compressed and uncompressed in succession shall not be a realistic use case.

Closes: #6689 (closed)