Fix concurrent delete and flush error

[HTHou]

Description

The current logic may add some unclosed TsFiles to sealedTsFileList. When the file is deleted directly, some error may occur as below.

[sonarqubecloud]

Quality Gate passed

Issues
4 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
1.6% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

❌ Patch coverage is 33.33333% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 39.23%. Comparing base (3567c24) to head (3acad35).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
.../iotdb/db/storageengine/dataregion/DataRegion.java	33.33%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #17026      +/-   ##
============================================
- Coverage     39.35%   39.23%   -0.13%     
  Complexity      212      212              
============================================
  Files          5075     5075              
  Lines        340393   340396       +3     
  Branches      43443    43444       +1     
============================================
- Hits         133971   133538     -433     
- Misses       206422   206858     +436     

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