generate_sim_file_list.py excludes .svh and .vh files

In hdk/common/verif/scripts/generate_sim_file_list.py, at line 48:
` if not file_path.endswith('h') and not file_path.endswith('md'):
`
` generated_file_list.append(file_path.replace(cl_dir, '$CL_DIR'))
`
As .svh and .vh files end with 'h', they are excluded from the simulation compile list top.[sim].f, and can cause sims with .svh/.sh files to not build.

Read hdk/common/verif/scripts/generate_sim_file_list.py at line 48 and trace how its output becomes top.[sim].f. Confirm that .svh and .vh files are included in the generated simulation compile list without changing the handling of the other extensions, then verify the resulting list.

Written by the indexing model from the issue text.