nir/range_analysis: Set higher default maximum for max_workgroup_count

Fixes: c2a81ebe19 ("nir: Add default unsigned upper bound configuration.")
Closes: #7676
Reviewed-by: Karol Herbst <kherbst@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19835>

src/compiler/nir/nir.h

@@ -5725,6 +5725,7 @@ nir_variable_is_in_block(const nir_variable *var)
    return nir_variable_is_in_ubo(var) || nir_variable_is_in_ssbo(var);
 }
 
+/* See default_ub_config in nir_range_analysis.c for documentation. */
 typedef struct nir_unsigned_upper_bound_config {
    unsigned min_subgroup_size;
    unsigned max_subgroup_size;