feat: add host mask and public access auth

[dobrac]

Note

Adds network options to require a traffic access token and to mask the Host header, exposing trafficAccessToken and wiring through create/connect flows in JS and Python SDKs with tests.

• JS SDK:
  • Add trafficAccessToken to Sandbox and propagate via createSandbox/connectSandbox.
  • Extend SandboxNetworkOpts with allowPublicTraffic and maskRequestHost.
  • Tests: enforce 403 without token when allowPublicTraffic=false, allow access when true, and verify maskRequestHost updates Host header.
• Python SDK:
  • Add traffic_access_token to SandboxCreateResponse and surface on SandboxBase.
  • Wire token through async/sync create and connect paths.
  • Extend SandboxNetworkOpts with allow_public_traffic and mask_request_host.
  • Tests (async/sync): same access-token gating and host masking validations.
• Changesets:
  • Minor releases for @e2b/python-sdk and e2b documenting host masking and public traffic token.

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[changeset-bot]

🦋 Changeset detected

Latest commit: b23fc76

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
@e2b/python-sdk	Minor
e2b	Minor

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