bugfix: that keywords don't add escaped characters

[funky-eyes]

• I have registered the PR changes.

Ⅰ. Describe what this PR did

Ⅱ. Does this pull request fix one issue?

Fixes #5500

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 #5310 (f9bad41) into 2.x (33d777e) will increase coverage by 0.01%.
The diff coverage is 80.00%.

❗ Current head f9bad41 differs from pull request most recent head 3e5ec03. Consider uploading reports for the commit 3e5ec03 to get more accurate results

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@@             Coverage Diff              @@
##                2.x    #5310      +/-   ##
============================================
+ Coverage     48.58%   48.59%   +0.01%     
  Complexity     4196     4196              
============================================
  Files           764      764              
  Lines         26877    26870       -7     
  Branches       3358     3352       -6     
============================================
+ Hits          13057    13058       +1     
+ Misses        12439    12430       -9     
- Partials       1381     1382       +1     

Impacted Files	Coverage Δ
...va/io/seata/rm/datasource/exec/UpdateExecutor.java	85.48% <75.00%> (+5.48%)	⬆️
...datasource/exec/mysql/MySQLUpdateJoinExecutor.java	77.07% <100.00%> (-0.57%)	⬇️
...torage/file/store/FileTransactionStoreManager.java	60.45% <0.00%> (ø)
...er/src/main/java/io/seata/server/ServerRunner.java	65.38% <0.00%> (+15.38%)	⬆️

[slievrly]

LGTM