Lag when expanding component with annotations.

The annotations are refreshed every time a type is not found in the annotation cache, which is always for some type like transforms, monoscripts, etc.

To Repro:

1. Open a relatively big project.
2. Create a new scene.
3. Select the main camera.
4. In the inspector, expand/collapsed the Transform component. Notice the small delay every time the component is expanded/collapsed.
5. Do the same for the Camera component. Notice it doesn't do the same thing.