[devkit][bugfix] Add check for trace.NoOpTracerProvider to avoid crash

[zhengfeiwang]

Description

In some cases (we have observed in runtime scenario, related to mlflow), tracer provider can be set as trace.NoOpTracerProvider, which does not have method add_span_processor and lead to error. This PR adds a check on that to avoid such crash.

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• The pull request does not introduce [breaking changes].
• CHANGELOG is updated for new features, bug fixes or other significant changes.
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Testing Guidelines

• Pull request includes test coverage for the included changes.

[github-actions]

promptflow SDK CLI Azure E2E Test Result zhengfei/bugfix/mlflow-tracing-disable

  4 files    4 suites   4m 18s ⏱️
243 tests 203 ✅  40 💤 0 ❌
972 runs  812 ✅ 160 💤 0 ❌

Results for commit c5885ab.

[github-actions]

SDK CLI Global Config Test Result zhengfei/bugfix/mlflow-tracing-disable

6 tests   6 ✅  1m 19s ⏱️
1 suites  0 💤
1 files    0 ❌

Results for commit c5885ab.

[github-actions]

Executor Unit Test Result zhengfei/bugfix/mlflow-tracing-disable

796 tests   796 ✅  3m 46s ⏱️
  1 suites    0 💤
  1 files      0 ❌

Results for commit c5885ab.

[github-actions]

Executor E2E Test Result zhengfei/bugfix/mlflow-tracing-disable

246 tests   240 ✅  5m 3s ⏱️
  1 suites    6 💤
  1 files      0 ❌

Results for commit c5885ab.

[github-actions]

SDK CLI Test Result zhengfei/bugfix/mlflow-tracing-disable

    4 files      4 suites   1h 7m 27s ⏱️
  785 tests   765 ✅ 20 💤 0 ❌
3 140 runs  3 060 ✅ 80 💤 0 ❌

Results for commit c5885ab.

♻️ This comment has been updated with latest results.