zink: run sparse lowering after all optimization passes

some passes (e.g., opt_shrink_vector) operate on the assumption that
sparse tex ops have a certain number of components and then remove components
and unset the sparse flag if they can optimize out the sparse usage

zink's sparse ops do not have the standard number of components, which
causes such passes to make incorrect assumptions and tag them as
not being sparse, which breaks everything

fix #10540

Fixes: 0d652c0c8d ("zink: shrink vectors during optimization")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27414>

src/gallium/drivers/zink/zink_compiler.c

@@ -4021,6 +4021,7 @@ zink_shader_compile(struct zink_screen *screen, bool can_shobj, struct zink_shad
          zs->can_inline = false;
    } else if (need_optimize)
       optimize_nir(nir, zs, true);
+   NIR_PASS_V(nir, lower_sparse);
    
    struct zink_shader_object obj = compile_module(screen, zs, nir, can_shobj, pg);
    ralloc_free(nir);
@@ -5471,7 +5472,6 @@ zink_shader_create(struct zink_screen *screen, struct nir_shader *nir)
 
    NIR_PASS_V(nir, lower_basevertex);
    NIR_PASS_V(nir, lower_baseinstance);
-   NIR_PASS_V(nir, lower_sparse);
    NIR_PASS_V(nir, split_bitfields);
    NIR_PASS_V(nir, nir_lower_frexp); /* TODO: Use the spirv instructions for this. */