Vulkan: Fix regression not calling mRenderer->notifyDeviceLost Change: Vulkan: Fix freeing not completed Secondary Command Buffers. https://chromium-review.googlesource.com/c/angle/angle/+/4334579 .. accidentally removed `mRenderer->notifyDeviceLost();` line from `ContextVk::handleDeviceLost()` method. This CL fixes that regression. Bug: angleproject:6100 Change-Id: Iba3c9df71399821ac1b05109e873abfe5dc02bad Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4470307 Reviewed-by: Charlie Lao <cclao@google.com> Commit-Queue: Igor Nazarov <i.nazarov@samsung.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>