test: skip agent e2e when LLM budget is exhausted

[ling-senpeng13]

Summary

• skip the Anthropic-backed workflow judge when the API reports its configured usage limit is exhausted
• skip the Anthropic media counterfactual when the server-backed agent reports the same budget error
• preserve failures for all other API and workflow errors

Validation

• python -m compileall -q e2e/test_suite1_basic_validation.py e2e/test_suite25_media_input.py
• targeted pytest collection for both affected tests
• git diff --check

Failure context: https://github.com/conductor-oss/python-sdk/actions/runs/29977126793/job/89314998661#step:12:429

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
see 3 files with indirect coverage changes

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