Interactive interpreter doesn't handle keyboard interrupt correctly if tk.Tk object has been created. No exception name or newline with prompt is printed; REPL waits for Enter key to be pressed and then prints traceback instead of exception name.

To reproduce the bug, run python in interactive mode, create new tk.Tk object, then do interrupt and press Enter:

>>> import tkinter as tk
>>> root = tk.Tk()
>>>   # Ctrl+C goes here, but no exception name or newline is printed, so hit Enter
Traceback (most recent call last):
  File "<stdin>", line -1, in <module>
KeyboardInterrupt
>>>

In 3.12.0a0, if user wrote any syntactically incorrect code before interrupting, exception object dump and 'lost sys.stderr' message will be printed:

>>> import tkinter as tk
>>> root = tk.Tk()
>>> def f   # Ctrl+C, then Enter
object address  : 0x7ff4eede5020
object refcount : 2
object type     : 0x5565abf3f260
object type name: SyntaxError
object repr     : SyntaxError("expected '('", ('<stdin>', 1, 6, 'def f', 1, 6))
lost sys.stderr
>>>

CPython versions tried: 3.10.3 and 3.12.0a0 on Linux (5.16.9-arch1-1), 3.9.2 on Windows 10.