BugFix: fix the issue of the client-side socket fd cannot be recycled…

[liucf3995]

… in a timely manner when using fiber connection pool, causing the number of close-wait to increase.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (ffcfe9f) 81.79163% compared to head (f386dc1) 81.70584%.

Additional details and impacted files

@@                 Coverage Diff                 @@
##                main        #108         +/-   ##
===================================================
- Coverage   81.79163%   81.70584%   -0.08580%     
===================================================
  Files            855         855                 
  Lines          33902       33907          +5     
===================================================
- Hits           27729       27704         -25     
- Misses          6173        6203         +30     

Files	Coverage Δ
.../runtime/iomodel/reactor/fiber/fiber_connection.cc	55.08982% <100.00000%> (+0.54437%)	⬆️
...c/runtime/iomodel/reactor/fiber/fiber_connection.h	25.00000% <ø> (ø)
...time/iomodel/reactor/fiber/fiber_tcp_connection.cc	65.50000% <100.00000%> (-0.99747%)	⬇️

... and 11 files with indirect coverage changes