fix(miranum): complex object mapping

[DaAnda97]

Closes #360

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 68.75000% with 5 lines in your changes are missing coverage. Please review.

Project coverage is 45.07%. Comparing base (6c988cb) to head (24b582a).

Files	Patch %	Lines
.../camunda7/remote/worker/Camunda7WorkerAdapter.java	80.00%	2 Missing :warning:
...nnect/camnda7/remote/utils/Camunda7PojoMapper.java	0.00%	0 Missing and 1 partial :warning:
...anum/connect/elementtemplate/api/PropertyType.java	0.00%	1 Missing :warning:
...ttemplate/c8/Camunda8ElementTemplateGenerator.java	50.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #362 +/- ## ============================================ + Coverage 44.98% 45.07% +0.08% + Complexity 384 383 -1 ============================================ Files 184 184 Lines 2025 2021 -4 Branches 107 106 -1 ============================================ Hits 911 911 + Misses 1083 1079 -4 Partials 31 31 ``` | [Flag](https://app.codecov.io/gh/Miragon/miranum/pull/362/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Miragon) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/Miragon/miranum/pull/362/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Miragon) | `45.07% <68.75%> (+0.08%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Miragon#carryforward-flags-in-the-pull-request-comment) to find out more.

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