Add missing event commit in ADDHIST command

[lunkwill42]

The ADDHIST API command makes event modifications, but changing the implementation to commit the changes once the event commit framework was built was forgotten. This adds the proper changes.

[github-actions[bot]]

Test results

    3 files      3 suites   24s :stopwatch: 206 tests 206 :heavy_check_mark: 0 :zzz: 0 :x: 618 runs  616 :heavy_check_mark: 2 :zzz: 0 :x:

Results for commit b97b349a.

:recycle: This comment has been updated with latest results.

[sonarcloud[bot]]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (77c10bf) 97.85% compared to head (b97b349) 97.86%. Report is 21 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #152 +/- ## ======================================= Coverage 97.85% 97.86% ======================================= Files 31 31 Lines 2377 2379 +2 ======================================= + Hits 2326 2328 +2 Misses 51 51 ```

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