fix: do not pick compacting/expired files

[evenyag]

I hereby agree to the terms of the GreptimeDB CLA.

Refer to a related PR or issue link (optional)

What's changed and what's your intention?

This PR fixes that twcs compaction picker may pick expired files to compact.

We already set the compacting here: https://github.com/GreptimeTeam/greptimedb/blob/22a662f6bcb811e2c6e36a2a29d035175f4131df/src/mito2/src/compaction/twcs.rs#L218-L222

Checklist

• [ ] I have written the necessary rustdoc comments.
• [ ] I have added the necessary unit tests and integration tests.
• [ ] This PR requires documentation updates.

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 83.81%. Comparing base (22a662f) to head (1de52c6). Report is 2 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #4955 +/- ## ========================================== - Coverage 84.04% 83.81% -0.24% ========================================== Files 1142 1142 Lines 211473 211509 +36 ========================================== - Hits 177740 177269 -471 - Misses 33733 34240 +507 ```

[evenyag]

LGTM, but where do you check if a file is expired?

Here: https://github.com/GreptimeTeam/greptimedb/blob/22a662f6bcb811e2c6e36a2a29d035175f4131df/src/mito2/src/compaction/twcs.rs#L216-L217