Sharing render output between two canvases is broken
When creating two pipelines sharing the same dataContainer having the same _renderTargetID, the sharing of the render output is broken.
- When interacting with one pipeline, the output of the other does not get updated (setPipelineDirty() is not called, missing onDataContainerAdded overload in AbstractPipeline)
- Even if that is added, the other canvas often just shows a black screen.