Python 3.13: Pressing the Tab key while in the REPL prints 4 spaces instead of 1 tab (breaking backspace)

Bug report

Bug description:

Tested on 3.12:
In the <=3.12 Python REPL on Linux, I can press the tab key, and a tab character is printed in the console. I can then use the backspace key to undo that whole tab character.

Tested on 3.13:
In the 3.13 Python REPL on Linux, if I type a tab character, it seems to convert it to 4 spaces, and thus pressing the backspace key once only deletes 1/4 of the indentation.

This is either a bug, or if it's a feature, it should be configurable and without changing the sane defaults from <=3.12.
How can I get back to the <=3.12 behaviour?

CPython versions tested on:

3.12, 3.13

Operating systems tested on:

Linux, macOS

Commencez par reproduire le comportement de Tab et backspace dans la REPL Python 3.12 et 3.13 sous Linux ou macOS, en comparant la gestion de l'indentation signalée. Suivez le chemin d'entrée de la REPL responsable de la conversion de l'entrée Tab, puis vérifiez que le comportement obtenu correspond au comportement <=3.12 ou fournit la configuration demandée.