bc91af8021
After converting a texture from one modifier to another, there is no reason to force the modifier to stay constant afterwards. Set back `modifier_constant` to false because it is changed by `resource_setup` as it is causing issues when implementing AFBC packing. Signed-off-by: Louis-Francis Ratté-Boulianne <lfrb@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25012>