unintentional warnings from tests

[isaacsas]

┌ Warning: Initialization system is overdetermined. 1 equations for 0 unknowns. Initialization will default to using least squares. To suppress this warning pass warn_initialize_determined = false. To make this warning into an error, pass fully_determined = true
└ @ ModelingToolkit ~/.julia/packages/ModelingToolkit/UXr3S/src/systems/diffeqs/abstractodesystem.jl:1464
┌ Warning: Initialization system is overdetermined. 1 equations for 0 unknowns. Initialization will default to using least squares. To suppress this warning pass warn_initialize_determined = false. To make this warning into an error, pass fully_determined = true
└ @ ModelingToolkit ~/.julia/packages/ModelingToolkit/UXr3S/src/systems/diffeqs/abstractodesystem.jl:1464
┌ Warning: Initialization system is overdetermined. 2 equations for 0 unknowns. Initialization will default to using least squares. To suppress this warning pass warn_initialize_determined = false. To make this warning into an error, pass fully_determined = true
└ @ ModelingToolkit ~/.julia/packages/ModelingToolkit/UXr3S/src/systems/diffeqs/abstractodesystem.jl:1464
┌ Warning: Initialization system is overdetermined. 2 equations for 0 unknowns. Initialization will default to using least squares. To suppress this warning pass warn_initialize_determined = false. To make this warning into an error, pass fully_determined = true
└ @ ModelingToolkit ~/.julia/packages/ModelingToolkit/UXr3S/src/systems/diffeqs/abstractodesystem.jl:1464
Test Summary:                | Pass  Broken  Total   Time
Coupled CRN/Equation Systems |  163       2    165  46.8s
 46.821578 seconds (130.66 M allocations: 8.431 GiB, 3.31% gc time, 99.21% compilation time: <1% of which was recompilation)

┌ Warning: The following unrecognised metadata entries: DataType[Symbolics.CallWithParent] are not recognised for species/variable/parameter X2(t). If you raise an issue at https://github.com/SciML/Catalyst.jl, we can add support for this metadata type.
└ @ Catalyst ~/.julia/dev/Catalyst/src/reactionsystem_serialisation/serialisation_support.jl:202
┌ Warning: The following unrecognised metadata entries: DataType[Symbolics.CallWithParent] are not recognised for species/variable/parameter X2(t). If you raise an issue at https://github.com/SciML/Catalyst.jl, we can add support for this metadata type.
└ @ Catalyst ~/.julia/dev/Catalyst/src/reactionsystem_serialisation/serialisation_support.jl:202
┌ Warning: The following unrecognised metadata entries: DataType[Symbolics.CallWithParent] are not recognised for species/variable/parameter Xtot(t). If you raise an issue at https://github.com/SciML/Catalyst.jl, we can add support for this metadata type.
└ @ Catalyst ~/.julia/dev/Catalyst/src/reactionsystem_serialisation/serialisation_support.jl:202
Test Summary:                | Pass  Total  Time
ReactionSystem Serialisation |   51     51  6.1s
  6.147298 seconds (13.53 M allocations: 927.534 MiB, 10.91% gc time, 97.04% compilation time: <1% of which was recompilation)

[isaacsas]

These seem indicative of incorrectly specified initial conditions now that initialization is fixed, and I suspect of the issue reported in #1057

[isaacsas]

@TorkelE can you look into these? I am still seeing them in the coupled system tests.