gh-86997: IDLE fix colors for MacOS dark mode

[tadeja]

This is to resolve #86997

• Issue: gh-86997

[ghost]

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[bedevere-app[bot]]

Most changes to Python require a NEWS entry. Add one using the blurb_it web app or the blurb command-line tool.

If this change has little impact on Python users, wait for a maintainer to apply the skip news label instead.

[Wulian233]

Add one using the blurb_it web app or the blurb command-line tool.

News need https://github.com/tadeja/cpython/tree/IDLE_colors_MacOS_Dark/Misc/NEWS.d/next/IDLE add to here