st/mesa: don't enable NV_copy_depth_to_color if NIR doesn't support FP64

Fixes: e512f2cef92 - mesa: add NV_copy_depth_to_color support for nir
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/3459

Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6467>
1 file changed