Advertise FastVideo/DreamX-World-5B-Cam-Diffusers and
FastVideo/DreamX-World-5B-Diffusers as the loadable ids in the registry
(raw GD-ML path detection is kept via the pattern detectors), default the
example and local tests to the hub ids so they no longer skip when local
converted dirs are absent, and drop the now-redundant pipeline class
override in the example (model_index.json carries DreamXWorldPipeline).
SolitaryThinker
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