Fix wal queue stuck and fix wal_queue_max_mem_size metric

[HTHou]

Description

The nonFullCondition in MemoryControlledWALEntryQueue should be static. Otherwise, the MemoryControlledWALEntryQueue may stuck.

This PR also fixed the wal_queue_max_mem_size metric no data problem.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

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

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

Attention: Patch coverage is 42.85714% with 4 lines in your changes missing coverage. Please review.

Project coverage is 39.67%. Comparing base (5898668) to head (5bbd332).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
...pache/iotdb/db/service/metrics/WritingMetrics.java	0.00%	4 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #14387      +/-   ##
============================================
- Coverage     39.68%   39.67%   -0.02%     
  Complexity      185      185              
============================================
  Files          4326     4327       +1     
  Lines        274726   274911     +185     
  Branches      33354    33385      +31     
============================================
+ Hits         109036   109072      +36     
- Misses       165690   165839     +149     

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