turnip: fix resolve MSAA D32_SFLOAT_S8_UINT image to S8_UINT

turnip: fix resolve MSAA D32_SFLOAT_S8_UINT image to S8_UINT

According to VK_KHR_depth_stencil_resolve spec (see
VUID-VkSubpassDescriptionDepthStencilResolve-pDepthStencilResolveAttachment-03182):

"If the VkFormat of pDepthStencilResolveAttachment has a stencil
component, then the VkFormat of pDepthStencilAttachment must have a
stencil component with the same number of bits and numerical
type"

The issue with D32_SFLOAT_S8_UINT format is that it is implemented as
two planes, so we need to execute the separate_stencil path in
tu_emit_blit() to resolve its stencil component into S8_UINT image.

Fixes the following tests:

dEQP-VK.renderpass2.depth_stencil_resolve.image_2d_32_32.samples_2.d32_sfloat_s8_uint.compatibility_depth_zero_stencil_zero_testing_stencil
dEQP-VK.renderpass2.depth_stencil_resolve.image_2d_32_32.samples_2.d32_sfloat_s8_uint_separate_layouts.compatibility_depth_zero_stencil_zero_testing_stencil

Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Jonathan Marek <jonathan@marek.ca>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8527>