message: fix scissor override
  don't forget to update the scissor state when setting the override.
diff: @@ -708,6 +708,7 @@ void RenderPass::Executor::overrideScissor(backend::Viewport const* scissor) noe
  }
  void RenderPass::Executor::overrideScissor(backend::Viewport const& scissor) noexcept {
  + mScissorOverride = true;
  mScissor = scissor;
  }
  