Add parameter to disable/enable internal 2wt

[flo-dup]

Please check if the PR fulfills these requirements

• [x] The commit message follows our guidelines
• [ ] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs have been added / updated (for bug fixes / features)

Does this PR already have an issue describing the problem? No

What kind of change does this PR introduce? Bug fix / feature

What is the current behavior? Internal two-winding transformers and phase-shift transformers are added in VoltageLevelGraph as EquipmentNodes, hence are withing an InternCell or ExternCell.

What is the new behavior (if this is a feature change)? Internal two-winding transformers and phase-shift transformers are added in VoltageLevelGraph as FeederNodes, but can be later replaced by EquipmentNodes with VoltageLevelLayoutFactoryParameter::setSubstituteInternalMiddle2wtByEquipmentNodes`. This parameter is true by default.

Other information: NetworkGraphBuilder::handleConnectedComponents (together with child method NetworkGraphBuilder::ensureOneBusInConnectedComponent) needed to move to GraphRefiner in order not to interfere with this feature

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
93.8% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud