Fix CGM publication error

[Haigutus]

• [x] 1. SSH is exported in merged state, need to use original SSH per TSO and update from merged SV
  • Short term: Fixed in post processing
  • Long term: TODO
• [x] 2. OPDM gives filename/metadata error on upload
• [x] 3. powsybl SV instance export contains ShuntCompensatorSections for EquivalentShunt
  • Short term - Fixed in postprocessing
  • Long Term - In progress (https://github.com/powsybl/powsybl-core/issues/2672)
• [x] 4. powsybl SV some Tap Steps are not exported
  • Short term - Fixed in postprocessing
  • Long Term - In progress (https://github.com/powsybl/powsybl-core/pull/2685)
• [x] 5. powsybl SV has issues with KirchoffsFristLaw - TODO

[Haigutus]

Tap Steps issue fixed

[Haigutus]

5. was not an issue, slackBusMaxMismatch needed to be changed from 1.0 MW to 0.1 MW

[Haigutus]

All known issues solved, if new ones pop up, we can open the ticket again.