optimize: downgrade check unlock and asynchronous

[slievrly]

Signed-off-by: slievrly slievrly@163.com

Ⅰ. Describe what this PR did

optimize: downgrade check unlock and asynchronous

Ⅱ. Does this pull request fix one issue?

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov-commenter]

Codecov Report

Merging #2829 into develop will decrease coverage by 0.00%.
The diff coverage is 30.43%.

@@              Coverage Diff              @@
##             develop    #2829      +/-   ##
=============================================
- Coverage      50.15%   50.15%   -0.01%     
- Complexity      2949     2954       +5     
=============================================
  Files            590      591       +1     
  Lines          18938    18950      +12     
  Branches        2284     2285       +1     
=============================================
+ Hits            9498     9504       +6     
- Misses          8496     8503       +7     
+ Partials         944      943       -1     

Impacted Files	Coverage Δ	Complexity Δ
.../java/io/seata/spring/event/DegradeCheckEvent.java	0.00% <0.00%> (ø)	0.00 <0.00> (?)
...ing/annotation/GlobalTransactionalInterceptor.java	25.19% <22.22%> (+0.78%)	7.00 <0.00> (ø)
...c/main/java/io/seata/core/event/GuavaEventBus.java	70.58% <50.00%> (-29.42%)	6.00 <3.00> (+2.00)	⬇️
...in/java/io/seata/server/session/GlobalSession.java	84.16% <0.00%> (+0.45%)	72.00% <0.00%> (+1.00%)
...o/seata/server/coordinator/DefaultCoordinator.java	55.15% <0.00%> (+0.51%)	30.00% <0.00%> (+2.00%)

[funky-eyes]

LGTM

[l81893521]

LGTM