d089b5e6ad
When exporters use layout panels, it was possible for their panel ids to conflict if more than 1 of the same exporter was configured on the same collection. The result would be that opening/closing a panel in one exporter would open/close it for all other exporters of the same type. This fix changes the layout to avoid the issue entirely by using a list and only having only one exporter drawn at a time. A few alternate designs were considered but they would either cause intrusive changes to each location where a layout panel was used or would result in tricky disambiguation code inside the UI system itself. Pull Request: https://projects.blender.org/blender/blender/pulls/121555
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