Use itemDataMap (required by wx mixin) instead of item_data_map,
and use fp.GetSheetname() instead of GetProperties() lookup.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Shows a sortable table of all board components with columns for
designation, value, library, package, and sheet instance.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>