【bugfix】修复上下文类加载器切换恢复异常问题(develop)

[lilai23]

【修复issue】#1156

【修改内容】修复上下文类加载器切换恢复异常问题

【用例描述】无需修改

【自测情况】类加载问题复现并解决

【影响范围】springboot注册插件

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.09 ⚠️

Comparison is base (b586ff2) 41.63% compared to head (8403bd0) 41.55%.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #1161      +/-   ##
=============================================
- Coverage      41.63%   41.55%   -0.09%     
  Complexity      3183     3183              
=============================================
  Files            808      810       +2     
  Lines          17791    17829      +38     
  Branches        1943     1941       -2     
=============================================
  Hits            7408     7408              
- Misses          9443     9481      +38     
  Partials         940      940              

Flag	Coverage Δ
unittests	41.55% <ø> (-0.09%)	⬇️

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see 10 files with indirect coverage changes

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[robotLJW]

/lgtm