Eeschema: Fix non-visible source types in SPICE model dialog

Sylwester Kocjanrequested to merge
skocjan/kicad:fix-spice-model-editor into master

This MR fixes change introduced in commit: c7daca1e Three new tabs were added to dialog window but they are set to hidden. Due to wxWidgets, they were working fine on Windows but not on Linux. Attribute 'Hidden' must be cleared.

Closes #6540 (closed)

Merge request reports