fix: clean HibernateSequentialNumberCounterStoreTest flaky tests

[lucaCambi77]

Following a test failing, with this PR, we do some cleanup in HibernateSequentialNumberCounterStoreTest.

• Remove the DummyService class used only for testing.
• Make the testing more clear with @ParameterizedTest
• Remove the unnecessary uid random generation for a few tests.

[sonarqubecloud]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (312f80c) 49.65% compared to head (08c851c) 66.48%.
Report is 5 commits behind head on master.

Additional details and impacted files

@@              Coverage Diff              @@
##             master   #16202       +/-   ##
=============================================
+ Coverage     49.65%   66.48%   +16.83%     
- Complexity    23555    31628     +8073     
=============================================
  Files          3513     3514        +1     
  Lines        131127   131139       +12     
  Branches      15298    15296        -2     
=============================================
+ Hits          65108    87185    +22077     
+ Misses        59900    36832    -23068     
- Partials       6119     7122     +1003     

Flag	Coverage Δ
integration	50.00% <100.00%> (?)
integration-h2	32.67% <0.00%> (+0.02%)	⬆️
unit	30.37% <0.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
...bernate/HibernateSequentialNumberCounterStore.java	100.00% <100.00%> (+100.00%)	⬆️

... and 1257 files with indirect coverage changes

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 312f80c...08c851c. Read the comment docs.

[gnespolino]

lgtm