[Promptflow CLI] Write exception info to stderr when set env PROMPTFLOW_STRUCTURE_EXCEPTION_OUTPUT

[lalala123123]

Description

Write exception info and command to stderr when set environment variable PROMPTFLOW_STRUCTURE_EXCEPTION_OUTPUT=true

promptflow error in stderr:

{
    "message":"Connection 'invalid_name' is not found.",
    "messageFormat":"",
    "messageParameters":{

    },
    "referenceCode":"Unknown",
    "code":"ConnectionNotFoundError",
    "innerError":null,
    "debugInfo":{
        "type":"ConnectionNotFoundError",
        "message":"Connection 'invalid_name' is not found.",
        "stackTrace":"Traceback (most recent call last):\n  File \"D:\\Project\\github_promptflow\\promptflow\\src\\promptflow\\promptflow\\_cli\\_utils.py\", line 354, in wrapper\n    return func(*args, **kwargs)\n  File \"D:\\Project\\github_promptflow\\promptflow\\src\\promptflow\\promptflow\\_cli\\_pf\\_connection.py\", line 187, in show_connection\n    connection = _client.connections.get(name)\n  File \"D:\\Project\\github_promptflow\\promptflow\\src\\promptflow\\promptflow\\_sdk\\operations\\_connection_operations.py\", line 47, in get\n    orm_connection = ORMConnection.get(name, raise_error)\n  File \"D:\\Project\\github_promptflow\\promptflow\\src\\promptflow\\promptflow\\_sdk\\_orm\\retry.py\", line 43, in f_retry\n    return f(*args, **kwargs)\n  File \"D:\\Project\\github_promptflow\\promptflow\\src\\promptflow\\promptflow\\_sdk\\_orm\\connection.py\", line 52, in get\n    raise ConnectionNotFoundError(f\"Connection {name!r} is not found.\")\n",
        "innerException":null
    },
    "command":"pf connection show --name invalid_name --format_exception"
}

system error in stderr:

{
    "code":"SystemError",
    "message":"mock exception",
    "messageFormat":"",
    "messageParameters":{

    },
    "innerError":{
        "code":"Exception",
        "innerError":null
    },
    "debugInfo":{
        "type":"Exception",
        "message":"mock exception",
        "stackTrace":"Traceback (most recent call last):\n  File \"D:\\Project\\github_promptflow\\promptflow\\src\\promptflow\\promptflow\\_cli\\_utils.py\", line 354, in wrapper\n    return func(*args, **kwargs)\n  File \"D:\\Project\\github_promptflow\\promptflow\\src\\promptflow\\promptflow\\_cli\\_pf\\_connection.py\", line 187, in show_connection\n    connection = _client.connections.get(name)\n  File \"C:\\Users\\zhrua\\Miniconda3\\envs\\prompt_github\\lib\\unittest\\mock.py\", line 1093, in __call__\n    return self._mock_call(*args, **kwargs)\n  File \"C:\\Users\\zhrua\\Miniconda3\\envs\\prompt_github\\lib\\unittest\\mock.py\", line 1097, in _mock_call\n    return self._execute_mock_call(*args, **kwargs)\n  File \"C:\\Users\\zhrua\\Miniconda3\\envs\\prompt_github\\lib\\unittest\\mock.py\", line 1158, in _execute_mock_call\n    result = effect(*args, **kwargs)\n  File \"D:\\Project\\github_promptflow\\promptflow\\src\\promptflow\\tests\\sdk_cli_test\\e2etests\\test_cli.py\", line 1123, in mocked_connection_get\n    raise Exception(\"mock exception\")\n",
        "innerException":null
    },
    "command":"pf connection show --name invalid_connection_name --format_exception"
}

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.

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]

Executor Unit Test Result zhrua/print_error_msg

    2 files      2 suites   39s ⏱️
161 tests 161 ✔️ 0 💤 0 ❌
322 runs  321 ✔️ 1 💤 0 ❌

Results for commit 33dc5d5.

♻️ This comment has been updated with latest results.

[github-actions]

☂️ Python Coverage

current status: ✅

Overall Coverage

Lines	Covered	Coverage	Threshold	Status
10941	8299	76%	40%	🟢

New Files

No new covered files...

Modified Files

File	Coverage	Status
src/promptflow/promptflow/_cli/_utils.py	70%	🟢
TOTAL	70%	🟢

updated for commit: 33dc5d5 by action🐍

[github-actions]

Executor E2E Test Result zhrua/print_error_msg

    2 files      2 suites   5m 55s ⏱️
  91 tests   89 ✔️ 2 💤 0 ❌
182 runs  176 ✔️ 6 💤 0 ❌

Results for commit 33dc5d5.

♻️ This comment has been updated with latest results.

[github-actions]

SDK CLI Test Result zhrua/print_error_msg

    2 files      2 suites   17m 33s ⏱️
207 tests 194 ✔️ 13 💤 0 ❌
414 runs  388 ✔️ 26 💤 0 ❌

Results for commit 33dc5d5.

♻️ This comment has been updated with latest results.