Guess for parameter not reflected in guesses of system

[hexaeder]

Describe the bug 🐞

If you attach a guess to a parameter, it isn't reflected in the guesses of the system

Expected behavior

Have guesses contain all guesses.

Minimal Reproducible Example 👇
Example 1:

julia> begin
               @independent_variables t
               @parameters a [guess=2]
               @variables x(t) [guess=1]
               @named sys = ODESystem([x ~ a], t)
               guesses(sys)
           end
Dict{Any, Any} with 1 entry:
  x(t) => 1

Example 2:

  @mtkmodel MyMod begin
        @components begin
            a = RealInput(guess=1)
        end
        @parameters begin
            b, [guess=2]
        end
    end
    @named model = MyMod()
    guesses(model)       # knows only about a.u=1
    getguess(model.b)    # guess b=2 locally stored
    getguess(model.a.u)  # guess u=1 not locally stored

Environment (please complete the following information):

• Output of using Pkg; Pkg.status()

⌃ [13f3f980] CairoMakie v0.12.9
  [459566f4] DiffEqCallbacks v3.9.1
  [7d51a73a] ExplicitImports v1.9.0
  [86223c79] Graphs v1.11.2
⌅ [ee78f7c6] Makie v0.21.9
⌃ [961ee093] ModelingToolkit v9.39.0
⌃ [16a59e39] ModelingToolkitStandardLibrary v2.11.0
  [127b3ac7] OrdinaryDiffEqNonlinearSolve v1.2.1
  [43230ef6] OrdinaryDiffEqRosenbrock v1.2.0
  [b1df2697] OrdinaryDiffEqTsit5 v1.1.0