Python implementation of traceback limit does not default to 1000 as documented in 3.13

Bug report

Bug description:

According to the documentation of sys.tracebacklimit, it should default to 1000 if not set, so the following snippet:

import sys

def f():
    f()

sys.setrecursionlimit(2000)
f()

produces a traceback of 1000 frames as expected in 3.12:

Traceback (most recent call last):
  File "t.py", line 4, in f
    f()
    ~^^
  File "t.py", line 4, in f
    f()
    ~^^
  File "t.py", line 4, in f
    f()
    ~^^
  [Previous line repeated 997 more times]
RecursionError: maximum recursion depth exceeded

But in 3.13 and the current master, it produces a traceback of all 2000 frames:

Traceback (most recent call last):
  File "t.py", line 4, in f
    f()
    ~^^
  File "t.py", line 4, in f
    f()
    ~^^
  File "t.py", line 4, in f
    f()
    ~^^
  File "t.py", line 4, in f
    f()
    ~^^
  [Previous line repeated 1996 more times]
RecursionError: maximum recursion depth exceeded

This is because with issue #110721, traceback is now printed with the traceback module by default, and the traceback module defaults sys.tracebacklimit to None when not set:
https://github.com/python/cpython/blob/c3ed775899eedd47d37f8f1840345b108920e400/Lib/traceback.py#L458

whereas the C implementation of the traceback printer has a proper default of 1000 for sys.tracebacklimit as documented:
https://github.com/python/cpython/blob/c3ed775899eedd47d37f8f1840345b108920e400/Python/traceback.c#L707

I will submit a PR to make 1000 the default value for sys.tracebacklimit in the Python implementation of the traceback module.

CPython versions tested on:

3.13, CPython main branch

Operating systems tested on:

Linux, Windows

Linked PRs

• gh-125719
• gh-125777

Comienza en Lib/traceback.py, en el manejo predeterminado de sys.tracebacklimit, y compáralo con la implementación en C de Python/traceback.c. Verifica el valor predeterminado documentado de 1000 usando el ejemplo recursivo del issue, asegurándote de que el impresor de tracebacks de Python limite la salida de forma coherente con la implementación en C.