OpenGLRenderer: Fix FboFramebuffer making context switches

When a window was created and rendered onto, FBO rendering was made on the device reference context which required a context switch.

This has been fixed with OpenGLFboFramebuffer managing a per-context framebuffer and creating one when needed

src/Nazara/OpenGLRenderer/Wrapper/Context.cpp

@@ -1023,6 +1023,8 @@ namespace Nz::GL
 
 	void Context::OnContextRelease()
 	{
+		OnContextDestruction(this);
+
 		m_blitFramebuffers.reset();
 		m_vaoCache.Clear();
 	}