[🚀 Feature]: Add Python examples for W3C BiDi network intercept commands

[ajithrao2509]

Feature and motivation

Problem

The W3C BiDi Network documentation page currently contains
Java examples only for network intercept commands (add intercept,
remove intercept, fail request, request handlers).

Python examples are missing entirely.

Proposed Solution

Add a new file examples/python/tests/bidi/test_network_commands.py
with Python equivalents mirroring the existing Java tests and
following the pattern established in test_bidi_logging.py.

Scope

• test_add_intercept
• test_remove_intercept
• test_fail_request
• test_add_and_remove_request_handler

I am happy to submit a PR for this if the team agrees this is needed.

[github-actions]

@ajithrao2509, thank you for creating this issue. We will troubleshoot it as soon as we can.

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