Pre-processed data masses should have a version with an abscissa that matches ExperimentData.mass_fragment_numbers and RawSignalsSimulation

[AdityaSavara]

RawSignalsSimulation is not including all of the chosen masses that were originally selected.
Consider a case where you have chosen 8 masses and 3 molecules.
If only 7 of those masses are present for those 3 molecules, then ExperimentData.mass_fragment_numbers will be trimmed down to only those 7. This makes sense for solving. However, it turns out that a consequence is that signal simulation now does not include the 8th mass as a simulated mass. I think things are different in iterative, so one option would be to just do an iterative analysis and single iteration if one wants all 8 simulated masses.

However, in that situation the feature implicitSLScorrection can't be used.

This is probably okay, but then the preprocessed data export should also export a version of the signals with only these downselected masses. Right now signal simulation data can't be compared directly to the pre-processed data as easily because of this.