bugfix: fix sql exception when checking for the existence of the UNDO_LOG table on SQL server

[gggyd123]

…_LOG table on SQL server

• I have registered the PR changes.

Ⅰ. Describe what this PR did

fix sql exception when checking for the existence of the UNDO_LOG table on SQL server

Ⅱ. Does this pull request fix one issue?

fixes #6379

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

Attention: Patch coverage is 50.00000% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 52.37%. Comparing base (3c98058) to head (73795e5).

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x    #6380      +/-   ##
============================================
- Coverage     52.40%   52.37%   -0.03%     
+ Complexity     5244     5240       -4     
============================================
  Files           924      924              
  Lines         32066    32068       +2     
  Branches       3833     3833              
============================================
- Hits          16805    16797       -8     
- Misses        13607    13613       +6     
- Partials       1654     1658       +4     

Files	Coverage Δ
...source/undo/sqlserver/SqlServerUndoLogManager.java	11.42% <50.00%> (+2.33%)	⬆️

... and 2 files with indirect coverage changes

[funky-eyes]

LGTM