[bgw-gui]: Used kotlin std sortWith instead of java stream sort.

[codecov[bot]]

Codecov Report

Patch coverage: 100.00% and no project coverage change

Comparison is base (9baefa7) 14.28% compared to head (800fb36) 14.28%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #367 +/- ## ======================================= Coverage 14.28% 14.28% ======================================= Files 274 274 Lines 7098 7098 Branches 948 948 ======================================= Hits 1014 1014 Misses 6025 6025 Partials 59 59 ``` | [Impacted Files](https://codecov.io/gh/tudo-aqua/bgw/pull/367?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=tudo-aqua) | Coverage Δ | | |---|---|---| | [.../tools/aqua/bgw/observable/lists/ObservableList.kt](https://codecov.io/gh/tudo-aqua/bgw/pull/367?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=tudo-aqua#diff-Ymd3LWd1aS9zcmMvbWFpbi9rb3RsaW4vdG9vbHMvYXF1YS9iZ3cvb2JzZXJ2YWJsZS9saXN0cy9PYnNlcnZhYmxlTGlzdC5rdA==) | `100.00% <100.00%> (ø)` | | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=tudo-aqua). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=tudo-aqua)

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