[compiler] Reposition ref-in-render errors to the read location of .current #30723
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Stack from ghstack (oldest at bottom):
Summary:
Since we want to make ref-in-render errors enabled by default, we should position those errors at the location of the read. Not only will this be a better experience, but it also aligns the behavior of Forget and Flow.
This PR also cleans up the resulting error messages to not emit implementation details about place values.