Issue1473 pvt validation ext

[LoneMeertens]

Summary

This PR upgrades the PVT validation framework to use EN ISO 9806:2017 quasi-dynamic parameters as the canonical input for the developed PVT model.

To ensure compatibility with other datasheet standards, an Excel conversion template is included in
IDEAS.Resources.Data.Fluid.PVTCollectors that converts coefficients from:

• EN ISO 9806:2013 (Unglazed steady-state and Quasi-dynamic)
• EN ISO 9806:2025 Quasi-dynamic

to the ISO 9806:2017 parameter set.

Reference

Conversion methodology and model upgrades and model validation are described in:
Meertens, L.; Jansen, J.; Helsen, L. (2026).
Development and Experimental Validation of an Open-Source Unglazed Photovoltaic-Thermal Collector Modelica Model that only needs Datasheet Parameters.
Submitted to Mathematical and Computer Modelling of Dynamical Systems.

Related issue: #1473

[LoneMeertens]

Before merging, we need to fix the OpenModelica parse error caused by break in
IDEAS/Fluid/PVTCollectors/Validation/PVT_UI/PVTQuasiDynamicCollectorValidation.mo.

OpenModelica reports:

No viable alternative near token: break

This prevents the IDEAS library from loading in OpenModelica, as described in #1482.
The break identifier should therefore be worked around to avoid the parser conflict so the library can load and the PR can be properly tested.