[1D] Fixed singular Jacobian errors after grid modification
[1D] Fixed singular Jacobian errors after grid modification

Modification of the grid can interfere with the way the fixed temperature point
is handled, leading to solver failures. To fix this, the temperature fixed point
is checked and may be recalculated at the start of the solver.


imitrichev/cantera,Heathckliff/cantera,Heathckliff/cantera,Heathckliff/cantera,imitrichev/cantera,imitrichev/cantera,imitrichev/cantera,imitrichev/cantera,Heathckliff/cantera,imitrichev/cantera,Heathckliff/cantera,Heathckliff/cantera