Issue1482 Open Modelica errors and syntax warnings

[LoneMeertens]

Fix OpenModelica Syntax Errors in PPD12 and PVT Validation Models

This PR resolves syntax and parsing issues reported in #1482, which prevented IDEAS v4.0.0 (master) from loading in OpenModelica 1.25.5. All changes are backward‑compatible with Dymola.

Summary of Fixes

• PPD12 Structure.mo: removed invalid escape sequences (\e, \<) in the Documentation annotation that caused OpenModelica lexer warnings.
• PVT validation models: removed unsupported break statements from
  • Fluid/PVTCollectors/Validation/PVT_UI/PVTQuasiDynamicCollectorValidation.mo
  • Fluid/PVTCollectors/Validation/PVT_UN/PVTQuasiDynamicCollectorValidation.mo
• R410A package.order: removed duplicate entries (A, B, C) which referenced protected constants not meant to appear in package.order.

Impact

• IDEAS loads cleanly in OpenModelica 1.25.5 without syntax or parser warnings.
• Dymola compatibility is preserved.
• PVTCollectors package becomes usable again in OM (relevant for ongoing work in Issue1473 pvt validation ext #1481).
• No model behaviour or numerical results are affected.

[LoneMeertens]

@lucasverleyen Could you take a quick look at this PR? If everything is fine, can we merge it?

[lucasverleyen]

PR looks fine!

One general comment: you did not include any revision history in the models. Might be good and helpful for others if you add the revision history explaining what you changed to be OM compatible (or referring to the issue/PR in GitHub).

Other comments concert details and are rather suggestions for the future.

Thanks a lot for addressing this issue! :)

[lucasverleyen]

If I am right, this change has nothing to do with syntax, but with the duplicate names in the .order file (which can raise an issue in OMEdit)?

[LoneMeertens]

yes, indeed. It gave a warning in OM.