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Bug | POST /contactfilter | "OR" Operators in "Expression" Parameter are Converted into "AND" Operators in the Mailjet Web Application When Creating Contact Filters via the API

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# What is the bug? **Given** a user is making a `POST` request to the `/contactfilter` endpoint ([Source Line](https://github.com/mailjet/api-documentation/blob/3a446e6488a7a9dbcfd4f6fd7ba364576f99f284/guides/_newsletter.md?plain=1#L3392) | [API Reference Docs](https://dev.mailjet.com/email/reference/segmentation#v3_post_contactfilter) | [Developer Guide Docs](https://dev.mailjet.com/email/guides/segmentation/#create-your-segment)), **and** the user...