* fix: normalize path before consuming it while loading models
* Make it so that models derived from the service if present
* fix linkable tests that now match what has been passed to the medusa service if there is no custom joiner config
* fix linkable tests that now match what has been passed to the medusa service if there is no custom joiner config
* fix linkable tests that now match what has been passed to the medusa service if there is no custom joiner config
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