intel/ds: Label selected draw events with vertex count

Format draw and draw_indexed Perfetto events with their vertex count.
For draw_indirect and draw_indexed_indirect, include the draw count
when indirect tracing is enabled (MESA_GPU_TRACES=indirects), otherwise
fall back to the static name.

Signed-off-by: Michael Cheng <michael.cheng@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41374>