lsqnonlin only supported for method_of_moments

(cherry picked from commit 7f3bc60c)

doc/manual/source/the-model-file.rst

@@ -5984,7 +5984,7 @@ block decomposition of the model (see :opt:`block`).
                 routine (available under MATLAB if the Optimization Toolbox is
                 installed; available under Octave if the `optim
                 <https://octave.sourceforge.io/optim/>`__ package from
-                Octave-Forge is installed).
+                Octave-Forge is installed). Only supported for ``method_of_moments``. 
            ``101``

matlab/optimization/dynare_minimize_objective.m

@@ -542,6 +542,9 @@ switch minimizer_algorithm
     opt_par_values = opt_par_values(:);
   case 13
     % Matlab's lsqnonlin (Optimization toolbox needed).
+    if ~isfield(options_,'mom')
+        error('Option mode_compute=13 is available only for method_of_moments estimation.')
+    end
     if isoctave && ~user_has_octave_forge_package('optim')
         error('Option mode_compute=13 requires the optim package')
     elseif ~isoctave && ~user_has_matlab_license('optimization_toolbox')