[3006.x] Allow NamedLoaderContexts to be returned from loaded functions #66649
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It is useful in some cases to return NamedLoaderContexts from loaded functions. Instead of choking or requiring implementers to call the context's value() method before being de-scoped, detect when a NamedLoaderContext has been returned and return the value from the current context.
What issues does this PR fix or reference?
Fixes: #65251
Merge requirements satisfied?
[NOTICE] Bug fixes or features added to Salt require tests.