Previously, the popover menu in sculpt/texture paint mode did not take into account the `UnifiedBrushSettings` for the unit. To fix this, the behavior of `class _draw_tool_settings_context_mode` is matched by checking the same conditions when setting up the UI of the right-click popover menu. Fixes T81616 Reviewed By: #sculpt_paint_texture, pablodp606 Maniphest Tasks: T81616 Differential Revision: https://developer.blender.org/D9168