Improve suggestion in NameError when deleting builtins

Bug report

Bug description:

When deleting a name, python will only find the name in globals and locals, no builtins. However, the suggestion generating code just combined these dict, which makes the suggestion cycle:

>>> del next
Traceback (most recent call last):
  File "<python-input-0>", line 1, in <module>
    del next
        ^^^^
NameError: name 'next' is not defined. Did you mean: 'anext'?
>>> del anext
Traceback (most recent call last):
  File "<python-input-1>", line 1, in <module>
    del anext
        ^^^^^
NameError: name 'anext' is not defined. Did you mean: 'next'?

According to DPO, the best way to fix this bug is using dis to analyse the last traceback to get the final operation.

CPython versions tested on:

CPython main branch

Operating systems tested on:

No response

Linked PRs

• gh-141389

del next と del anext で問題を再現し、NameError の候補生成パスを調査してから、dis を使って traceback から最後の操作を特定します。リンクされた PR gh-141389 のアプローチと比較します。削除された builtin が代替候補として提案されなくなれば完了です。