Pop args out of log messages to prevent shipping non-JSON objects

[cicdw]

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Please describe your work and make sure your PR:

• adds new tests (if appropriate)
• updates CHANGELOG.md (if appropriate)
• updates docstrings for any new functions or function arguments, including docs/outline.toml for API reference docs (if appropriate)

Note that your PR will not be reviewed unless all three boxes are checked.

What does this PR change?

This PR pops args out of the logs record dictionary to prevent them from being sent to Cloud (under the info payload). args are typically used to format log messages and otherwise not needed for log visibility / inspection in Cloud.

Why is this PR important?

Closes #2407 and helps ensure users don't need to change their logging code when running in Prefect.

[codecov]

Codecov Report

Merging #2444 into master will increase coverage by 0.00%.
The diff coverage is 100.00%.