[3.13] gh-120104: IDLE: Fix padding in config and search dialogs (GH-120107)

[miss-islington]

Closes #120104
(cherry picked from commit 4b66b6b)

Co-authored-by: Serhiy Storchaka [email protected]

• Issue: IDLE uses incorrect screen dimension units #120104

[Yhg1s]

@terryjreedy Is this PR important enough to sneak in between rc2 and the final 3.13.0, or can it wait until 3.13.1? (The impact is unclear to me.)

[terryjreedy]

It is safe and has almost no visible effect. Fine to leave it. Ditto for #124325 typos. #124318 fixes bad behavior when newbies ask "What happens in IDLE if I enter while 1: 1. (I wonder if I could automate a test?) Nice but can wait as it is a toy experiment doing the opposite of what the IDLE doc recommends. The fix reverts a now unneeded change but theoretically correct change that fixed a mac-only test failure, but with this side effect. Move on if you want. Any important upcoming changes would be too invasive to merge before .0 even if ready.

[terryjreedy]

@Yhg1s Since you are doing an rc3, I would prefer this and the other 2 prs linked above be included, but especially the second. As implied, it reverts the code to what always worked before except in an automated test on macOS.

[Yhg1s]

I don't plan to do an rc3. (We don't really have time.)