sloproxy

refactor(runtime): enhance `NewUtlsHTTPClient` with context-based RoundTripper master

- Updated `NewUtlsHTTPClient` to support context-aware RoundTrippers for protected hosts (e.g., Cloudflare bypass). - Replaced `anthropicHosts` with `utlsProtectedHosts` to generalize host handling logic. - Added unit test to validate context-based RoundTripper behavior. - Replaced `NewProxyAwareHTTPClient` with `NewUtlsHTTPClient` in relevant executors for improved TLS fingerprinting. Closes: #3680


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4 changed files