Session layer visibility indicator could revert to default visible state unexpectedly.
Reproduce steps:
After toggling visibilities of session layers, adding a new layer to the session or anything that causes a render() on SessionLayerWidget will set the all visibility indicator for all layers to default visible state, which is inconsistent with the state shown on the map.
Session layer visibility indicator could revert to default visible state unexpectedly.
Reproduce steps: After toggling visibilities of session layers, adding a new layer to the session or anything that causes a render() on SessionLayerWidget will set the all visibility indicator for all layers to default visible state, which is inconsistent with the state shown on the map.