[Executor] Refine exec line in script executor

[lumoslnt]

Description

Refine exec line in script executor.

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.
• 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 dev/linatang/refine-exec-line-in-script-executor

  4 files    4 suites   4m 58s ⏱️
238 tests 203 ✅  35 💤 0 ❌
952 runs  812 ✅ 140 💤 0 ❌

Results for commit 28ff50e.

♻️ This comment has been updated with latest results.

[github-actions]

promptflow-core test result

0 tests   0 ✅  0s ⏱️
0 suites  0 💤
0 files    0 ❌

Results for commit 28ff50e.

♻️ This comment has been updated with latest results.

[github-actions]

SDK CLI Global Config Test Result dev/linatang/refine-exec-line-in-script-executor

5 tests   5 ✅  1m 11s ⏱️
1 suites  0 💤
1 files    0 ❌

Results for commit 28ff50e.

♻️ This comment has been updated with latest results.

[github-actions]

Executor Unit Test Result dev/linatang/refine-exec-line-in-script-executor

792 tests   792 ✅  3m 44s ⏱️
  1 suites    0 💤
  1 files      0 ❌

Results for commit 28ff50e.

♻️ This comment has been updated with latest results.

[github-actions]

Executor E2E Test Result dev/linatang/refine-exec-line-in-script-executor

241 tests   236 ✅  5m 13s ⏱️
  1 suites    5 💤
  1 files      0 ❌

Results for commit 28ff50e.

♻️ This comment has been updated with latest results.

[github-actions]

SDK CLI Test Result dev/linatang/refine-exec-line-in-script-executor

    4 files      4 suites   57m 58s ⏱️
  663 tests   650 ✅ 13 💤 0 ❌
2 652 runs  2 600 ✅ 52 💤 0 ❌

Results for commit 28ff50e.

♻️ This comment has been updated with latest results.

[thy09]

Add more detailed description for this change.