Difference in Ctrl+D Behavior Between REPL and `code.interact`

Bug report

Bug description:

With #133883 merged, hitting ctrl+d at the start of a blank line in a multi-line entry causes the existing code to be evaluated in both the new REPL and the basic REPL:

>>> def foo(x):
... 
  File "<python-input-0>", line 1
    def foo(x):
               ^
IndentationError: expected an indented block after function definition on line 1

But code.interact() exits immediately without executing the existing code:

>>> def foo(x):
... 

now exiting InteractiveConsole...

I doubt this is terribly impactful, but I think it would still be nice to have these behave the same way.

I have a patch ready that I think will resolve this, so I'll open a PR shortly.

CPython versions tested on:

CPython main branch

Operating systems tested on:

Linux

Linked PRs

• gh-139876

Empieza comparando el manejo de Ctrl+D en la REPL nueva y en la básica con code.interact(), usando la reproducción de la definición de función multilínea con una línea en blanco incluida en el issue. Se considera terminado cuando code.interact() evalúe el código existente de forma coherente con las demás REPL; el PR vinculado gh-139876 indica que el trabajo ya está en marcha.