gen_rust.py: param type overrides for sg_dispatch

bindgen/gen_rust.py

@@ -62,6 +62,9 @@ overrides = {
     "sg_draw.base_element": "uintptr_t",
     "sg_draw.num_elements": "uintptr_t",
     "sg_draw.num_instances": "uintptr_t",
+    "sg_dispatch.num_groups_x": "uintptr_t",
+    "sg_dispatch.num_groups_y": "uintptr_t",
+    "sg_dispatch.num_groups_z": "uintptr_t",
     "sshape_element_range_t.base_element": "uintptr_t",
     "sshape_element_range_t.num_elements": "uintptr_t",
     "sdtx_font.font_index": "uintptr_t",