Fix/console.print failed to render weakref.proxy objects

[shyam-ramani]

fixes #3656

Title: Improve Rich's Pretty Inspection to Handle Weakref Proxies Gracefully

Description:
This PR enhances Rich's inspection system by adding explicit handling for weakref.proxy objects in the safe_repr function. It prevents ReferenceError exceptions when inspecting dead weakref proxies and ensures consistent output formatting.

Key Changes:

• Added explicit handling for weakref proxy types in safe_repr.
• Checks proxy validity using object.__getattribute__(obj, "__callback__"), avoiding accidental forwarding.
• Returns <weakproxy ...; dead> when the reference is broken.
• Updates the Pretty class to use the modified safe_repr function.
• Maintains compatibility with existing weakref.ref handling.

Benefits:

✅ Prevents ReferenceError when inspecting dead weakref proxies.
✅ Matches Python's native weakref.ref behavior.
✅ Provides detailed output for alive proxies while marking dead ones explicitly.
✅ Ensures better debugging experience when dealing with weak references.

Verification:

import weakref
from rich import print

class TempClass:
    def __repr__(self):
        return "<TempClass>"

obj = TempClass()
proxy_obj = weakref.proxy(obj)

# Alive proxy
print(proxy_obj)  # Outputs: <weakproxy at 0x... to TempClass at 0x...>

# Dead proxy
del obj
print(proxy_obj)  # Now outputs: <weakproxy at 0x...; dead>