WIP: fix: add proactive check in connpool for gonet conn

[ppzqh]

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fix

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[codecov]

Codecov Report

Attention: Patch coverage is 74.01575% with 33 lines in your changes missing coverage. Please review.

Project coverage is 60.47%. Comparing base (14199d5) to head (90a1a6d).

Files with missing lines	Patch %	Lines
pkg/remote/connpool/long_pool.go	70.00%	17 Missing and 1 partial ⚠️
internal/remote/conn_check.go	74.28%	6 Missing and 3 partials ⚠️
pkg/remote/trans/gonet/conn.go	71.42%	3 Missing and 1 partial ⚠️
pkg/remote/trans/gonet/dialer.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1790      +/-   ##
===========================================
+ Coverage    60.31%   60.47%   +0.16%     
===========================================
  Files          381      382       +1     
  Lines        34515    34627     +112     
===========================================
+ Hits         20816    20940     +124     
+ Misses       12419    12409      -10     
+ Partials      1280     1278       -2     

Flag	Coverage Δ
integration	48.15% <39.63%> (+<0.01%)	⬆️
unit	50.89% <55.11%> (+0.13%)	⬆️

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