fix(deployment_tasks): do not remove log files in use

[ksqsf]

Do not remove the symlinked log files, because they are still in use.

Pull request

Issue tracker

Fixes will automatically close the related issue

Fixes #902
Fixes rime/squirrel#948

Feature

Describe feature of pull request

Unit test

• Done

Manual test

• Done

Code Review

1. Unit and manual test pass
2. GitHub Action CI pass
3. At least one contributor reviews and votes
4. Can be merged clean without conflicts
5. PR will be merged by rebase upstream base

Additional Info

To verify this PR:

1. Restart Squirrel and see log files
2. Advance the system date by 1 day
3. Redeploy
   • BEFORE: log files gone!
   • AFTER: the current log file should be kept.

[fxliang]

LGTM

I think it would keep the logs of apps works thought days.