PEtab import: Fix potentially incorrect sensitivities with state-depe… #2562
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…ndent sigmas
Due to PEtab not allowing and observables in noiseFormula and AMICI not allowing state variables in sigma expressions, we are trying to replace any state variables by matching observables during PEtab import.
However, if there were multiple observables with the same observableFormula, or one observableFormula was contained in another one, the substition of observableFormula for observableId could - depending on the ordering - result in noiseFormulas depending on other observables, which could lead to incorrect sensitivities due to #2561.
This change ensures that we are only using the observableId from the same row of the observable table as the noiseFormula.