chore: Enhanced error handling and timeout management in the request methods

[agrawalradhika-cell]

… methods.

Enhanced error handling and timeout management in the request methods.

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Fixes #<issue_number_goes_here> 🦕

[gemini-code-assist]

Code Review

This pull request refactors the asynchronous authorized session transport to enhance mutual TLS (mTLS) support, certificate rotation, and error handling. Key improvements include a non-blocking configure_mtls_channel flow and better cleanup of resources during request failures. The review feedback highlights three critical issues: potential unhandled CancelledError when checking the mTLS initialization task's exception status, a logical bug in the duplicate credential refresh check condition that can trigger redundant refreshes, and blocking the async event loop with the CPU-bound certificate context creation instead of running it in an executor.

[gemini-code-assist]

mtls.make_client_cert_ssl_context is a CPU-bound operation that parses certificates and private keys. Running it directly in the async event loop can block the loop and degrade performance of concurrent tasks. It should be run in an executor using await mtls._run_in_executor as was done in the previous implementation.

Suggested change

	ssl_context = (
	mtls.make_client_cert_ssl_context(
	cert_bytes, key_bytes
	)
	)
	ssl_context = await mtls._run_in_executor(
	mtls.make_client_cert_ssl_context,
	cert_bytes,
	key_bytes,
	)