optimize: Inaccurate judgment will lead to NPE.

[threefish]

Ⅰ. Describe what this PR did

Inaccurate judgment will lead to NullPointerException. After the global web exception is caught, the successful return result will be misjudged as a failure.

[codecov-io]

Codecov Report

Merging #2407 into develop will decrease coverage by 0.02%.
The diff coverage is 0.00%.

@@              Coverage Diff              @@
##             develop    #2407      +/-   ##
=============================================
- Coverage      51.67%   51.65%   -0.03%     
  Complexity      2696     2696              
=============================================
  Files            517      517              
  Lines          16761    16741      -20     
  Branches        1998     1989       -9     
=============================================
- Hits            8662     8648      -14     
+ Misses          7265     7260       -5     
+ Partials         834      833       -1     

Impacted Files	Coverage Δ	Complexity Δ
...in/java/io/seata/integration/http/XidResource.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...otobuf/convertor/BranchReportRequestConvertor.java	90.90% <0.00%> (-4.55%)	3.00% <0.00%> (ø%)
...obuf/convertor/BranchRollbackRequestConvertor.java	92.00% <0.00%> (-4.00%)	3.00% <0.00%> (ø%)
...ain/java/io/seata/config/ConfigurationFactory.java	52.08% <0.00%> (-0.98%)	4.00% <0.00%> (ø%)
...server/store/file/FileTransactionStoreManager.java	56.50% <0.00%> (-0.64%)	29.00% <0.00%> (ø%)
...in/java/io/seata/tm/api/TransactionalTemplate.java	66.35% <0.00%> (-0.32%)	24.00% <0.00%> (ø%)
...va/io/seata/core/store/db/LogStoreDataBaseDAO.java	55.77% <0.00%> (-0.15%)	21.00% <0.00%> (ø%)
...in/java/io/seata/server/session/BranchSession.java	78.03% <0.00%> (-0.08%)	44.00% <0.00%> (ø%)
...protobuf/convertor/RegisterRMRequestConvertor.java	90.47% <0.00%> (ø)	3.00% <0.00%> (ø%)
...protobuf/convertor/RegisterTMRequestConvertor.java	94.73% <0.00%> (ø)	3.00% <0.00%> (ø%)
... and 22 more

[l81893521]

LGTM

[slievrly]

LGTM

[jsbxyyx]

LGTM