🛠️ Refactor: Fix MRO for GenericListGetEndpoint and JobsEndpoint

[fderuiter]

🛠️ Refactor: Core Endpoints - Method Resolution Order (MRO) Fix

♻️ DRY: Ensured mixins can properly override generic base class methods without shadowing issues, allowing shared method logic to flow correctly.
🧱 SOLID: Improved inheritance structure in GenericListGetEndpoint and JobsEndpoint to align with standard Python mixin behavior.
📉 Diff: Minor ordering changes in class definitions.

Fixes the MRO in src/imednet/core/endpoint/base.py and src/imednet/endpoints/jobs.py to prevent base classes from shadowing mixins.

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PR created automatically by Jules for task 9523091221483086699 started by @fderuiter

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