[better_errors] Merge the JaxprDebugInfo and TracingDebugInfo into core.DebugInfo #26262
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Previously, we had two almost identical classes:
TracingDebugInfo
andJaxprDebugInfo
. The only difference was thatTracingDebugInfo
had a thunk to return the result paths, whileJaxprDebugInfo
had the result paths resolved to a tuple. The separation of these types provided some clarity, but also led to code duplication and required conversions as the debugging info goes fromWrappedFun
to aJaxpr
and then toWrappedFun
again.Much of this PR is just renaming.