Generate less warnings for stale code

[gaogaotiantian]

Feature or enhancement

Proposal:

We added a feature in pdb to give a warning when the source code is changed during debugging, which was a nice feature. However, there are certain scenarios where we don't need to give this warning (like if the user restart the program immediately). Or, to be more specific, we only need to generate this warning when the user browses source code.

Has this already been discussed elsewhere?

This is a minor feature, which does not need previous discussion elsewhere

Links to previous discussion of this feature:

No response

Linked PRs

• gh-125600: Only show stale code warning on source code display commands #125601