Disable tracing in Promptflow by default

[ninghu]

Description

Tracing frequently causes problems because OAI/AOAI keeps changing token statistics contracts. Disabling this feature to prevent these issues.

All Promptflow Contribution checklist:

• The pull request does not introduce [breaking changes].
• CHANGELOG is updated for new features, bug fixes or other significant changes.
• I have read the contribution guidelines.
• I confirm that all new dependencies are compatible with the MIT license.
• Create an issue and link to the pull request to get dedicated review from promptflow team. Learn more: suggested workflow.

General Guidelines and Best Practices

• Title of the pull request is clear and informative.
• There are a small number of commits, each of which have an informative message. This means that previously merged commits do not appear in the history of the PR. For more information on cleaning up the commits in your PR, see this page.

Testing Guidelines

• Pull request includes test coverage for the included changes.

[github-actions]

promptflow SDK CLI Azure E2E Test Result ninhu/disable_tracing

  3 files    3 suites   3m 20s ⏱️
244 tests 154 ✅  40 💤  37 ❌ 13 🔥
732 runs  462 ✅ 120 💤 111 ❌ 39 🔥

For more details on these failures and errors, see this check.

Results for commit 4898ba8.

♻️ This comment has been updated with latest results.