How to reproduce:
1. Open the attached project("SceneLightToggle")
2. Go to Assets > Scenes > SampleScene
3. Open Scene View window
4. Turn off the Scene View Light Toggle

Expected result: the 2D Light present in the Scene turns off
Actual result: the 2D Light present in the Scene stays turned on

Reproducible with: 2019.2.0f1(LWRP 6.9.1), 2019.3.0a11(LWRP 7.0.0)

Notes:
- Required 2D Renderer feature was introduced in 6.6.0 LWRP version, however, the publicly available version with this feature is 6.7.1.
- Couldn't test on 2019.2.0a1 - 2019.2.0a10 as while using 6.7.1 LWRP version "The type or namespace name 'TypeCache' does not exist in the namespace 'UnityEditor'" error was thrown
- LWRP 6.7.1 version became supported in 2019.2 versions