Trivial initialization problem isn't solved when creating `ODEProblem`

[AayushSabharwal]

@variables Y(t)
@parameters d p = Y [guess = 1.0]
eqs = [D(Y) ~ p - d*Y]
@mtkbuild osys = ODESystem(eqs, t)
u0 = [Y => 1.0]
p = [d => 0.2]
oprob = ODEProblem(osys, u0, (0.0, 1.0), p)

In the REPL:

julia> oprob[osys.Y]
1.0
julia> oprob.ps[osys.p]
0.0

This is because while the initialization is trivial:

julia> oprob.f.initialization_data.initializeprob
NonlinearProblem with uType Nothing. In-place: true
u0: nothing

julia> oprob.f.initialization_data.initializeprob.f.sys |> observed
2-element Vector{Equation}:
 Y(t) ~ 1.0
 p ~ Y(t)

MTK doesn't utilize this the way remake does and solve the problem on the spot. We can fix this by simply calling remake(prob) before returning.