20221114 warpvnd _save_stl_polys hides errors

[robnagler]

@mkeilman please explain why this error needs to be suppressed:

def _save_stl_polys(data):
    try:
        template_common.write_dict_to_h5(
            data,
            _SIM_DATA.lib_file_write_path(_stl_polygon_file(data.file)),
            h5_path="/",
        )
    except Exception as e:
        pkdlog("save_stl_polys error={}", e)
        pass

[mkeilman]

I don't remember for sure but it might have been throwing an error if the file exists, which does not matter? Just based on the commit logs...