gh-129098: Skip reading source lines if filename is _pyrepl.__main__.py inside REPL

[WolframAlph]

• Issue: REPL shows source code from _pyrepl.__main__.py #129098

[WolframAlph]

I don't have much context about REPL and not sure this is the correct way to fix this. After spending some time debugging where this comes from, I found out that adding check inside lazycache fixes this issue. Let me know if this is correct way or if this should be done differently.

[picnixz]

I'm not sure we should do it. linecache is independent of the REPL and we shouldn't rely on such checks (maybe the REPL should have its own linecache or something like that? or maybe we should have some better hooking mechanism for it).

Or we could check whether the reported traceback is correct or not (or we could hook compile itself?)

[picnixz]

Let's continue the discussion on the issue itself.

[picnixz]

Closing since it was superseded by #130721.