bugfix: global status inconsistent when rollback and branch register …

[zjinlei]

…are concurrent on db mode

Ⅰ. Describe what this PR did

Ⅱ. Does this pull request fix one issue?

fixes #1812

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

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov-io]

Codecov Report

Merging #1825 into develop will decrease coverage by 0.01%.
The diff coverage is 70%.

@@              Coverage Diff              @@
##             develop    #1825      +/-   ##
=============================================
- Coverage      55.34%   55.33%   -0.02%     
+ Complexity      2382     2381       -1     
=============================================
  Files            423      423              
  Lines          14270    14273       +3     
  Branches        1693     1694       +1     
=============================================
  Hits            7898     7898              
- Misses          5662     5663       +1     
- Partials         710      712       +2

Impacted Files	Coverage Δ	Complexity Δ
...rver/store/db/DatabaseTransactionStoreManager.java	65.9% <100%> (-0.26%)	22 <0> (ø)
.../java/io/seata/server/coordinator/DefaultCore.java	42.41% <25%> (-0.28%)	26 <0> (ø)
...in/java/io/seata/server/session/GlobalSession.java	84.54% <0%> (-0.49%)	67% <0%> (-1%)
...o/seata/server/coordinator/DefaultCoordinator.java	48.01% <0%> (-0.4%)	27% <0%> (-1%)
...server/store/file/FileTransactionStoreManager.java	58.54% <0%> (+0.63%)	30% <0%> (+1%)	⬆️

[xingfudeshi]

LGTM.

[slievrly]

LGTM

[ymwangzq]

Dose doGlobalCommit have the same problem?