fix: Show the internal before-passes and the camera use of engine 2.24 passes - #17

Engine 2.24 moved parts of the frame graph the Frame Graph view reads, so parts of the view went missing. The view now reads both engine shapes, so it keeps working with earlier engines.

Changes:

• The internal before-passes of a pass (fix: Keep the before-passes added to a RenderPassForward engine#9781), such as the directional shadows and the camera's before-passes of a forward pass, are nested under the pass ahead of its before-passes, in the tree and the pass details. Earlier engines have none. The Performance tab keeps them as passes of their own, rather than grouping a forward pass with its shadows as an effect
• The first and last camera use of a forward pass are read from the pass, where engine 2.24 keeps them (refactor: Render a RenderPassForward with a single camera engine#9783), and shown on its first and last layer step. Earlier engines keep them on each step, which the view still reads
• The "requires cubemaps" row is only shown for passes that have the property, which engine 2.24 removed (refactor: Remove the dead cubemap mipmap skip from the frame graph engine#9777)

Fixes #13