lightning: Don't log "received task config" in server mode (#52336)

[ti-chi-bot]

This is an automated cherry-pick of #52336

What problem does this PR solve?

Issue Number: close #36374

Problem Summary:

What changed and how does it work?

Lightning in server-mode logged the original TOML task config received in POST /task. This will leak password of the task into the log. Previously #36375 attempted to workaround by replacing the password part by ****** with regexp, but the regexp is written wrongly. Even if it is regexp is corrected, using regexp to parse TOML is bound to miss some edge cases.

This PR simply removed the log. If the task config can be successfully parsed, it should still be visible in the subsequent [cfg] log with proper redaction.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)

  • run in server-mode and send a config

• No need to test

  • I checked and no code files have been changed.

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

Fix the issue that sensitive information in logs is still printed in server mode.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-7.1@fd9583b). Click here to learn what that means.
The diff coverage is 100.0000%.

Additional details and impacted files

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kennytm, lance6716, lyzx2001

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-04-11 14:26:37.742026954 +0000 UTC m=+1145259.269567499: ☑️ agreed by lance6716.
• 2024-04-11 14:55:57.563128805 +0000 UTC m=+1147019.090669347: ☑️ agreed by kennytm.