Change parameter precedence when creating task from base

[fm3]

When creating a task from a base annotation, the starting position/rotation and bounding box as specified during task creation are now used and overwrite the ones from the original base annotation.

URL of deployed dev instance (used for testing):

• https://taskbaseparameters.webknossos.xyz

Steps to test:

• Create an explorative annotation, trace some, copy id
• Create a task, select base annotation, insert above id
• When requesting the task, you should start at the edit position + rotation as specified during task creation, not the ones from said explorative annotation.

Issues:

• fixes Respect "Starting Position" in task when using an Annotation ID as Base #6200
• contributes to Refactor backend: dataclass static function naming: from vs createFrom #6241

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• Updated (unreleased) changelog
• Ready for review

[jstriebel]

Nice, I like the new refactorings! LGTM 🚢