Made the model "MODEL_NOREX_R1RHO", be testes in systemtest Relax_disp.test_r1rho_kjaergaard_auto.
This is for systemtest where R1 has been loaded from earlier results, which was not analysed in relax.
bug #22440(https://gna.org/bugs/?22440): The "NOREX" model is not covering R1rho models.
sr #3135(https://gna.org/support/?3135): Optimisation of the R1 relaxation rate for the off-resonance R1rho relaxation dispersion models.
