[BUG] Verify StronglyEntangling Layers Ansatz

From PR cirKITers/MindTheQApp#20; StronglyEntanglingLayers is implemented, but maybe needs some extension because in [the original paper](https://arxiv.org/pdf/1804.00633), the two-qubit gates feature trainable parameters.

Start by locating the existing StronglyEntanglingLayers implementation and compare its two-qubit gates with the trainable parameters described in the linked original paper. Confirm the intended extension before making changes; done means the implementation matches the paper's parameterization and its behavior is covered by the project's relevant checks.

Written by the indexing model from the issue text.