fix: properly remove interaction on layer update

[silvester-pari]

Implemented changes

This PR fixes a bug with removing the select interaction when updating the layer. Also, there was still an .only on the select-interaction tests from the refactoring, causing test cases to be disabled.

Originating from commits in https://github.com/EOX-A/EOxElements/pull/1342.

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• [x] I have performed a self-review of my code
• [x] I have added a test related to this feature/fix
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• [x] The PR title follows conventional commit style and reflects the type of change (major/minor/patch, breaking)
• [x] The PR title describes the change within this element (each merged PR equals one entry in the element's changelog!)

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