Broken on 1.12

[MilesCranmer]

SymbolicUtils.jl is making downstream CI fail on 1.12. Here is the error log:

  ✗ SymbolicUtils
Precompiling packages finished.
  0 dependencies successfully precompiled in 22 seconds. 70 already precompiled.
  1 dependency errored.
  For a report of the errors see `julia> err`. To retry use `pkg> precompile`

julia> err
PkgPrecompileError: The following 1 direct dependency failed to precompile:

SymbolicUtils

Failed to precompile SymbolicUtils [d1185830-fcd6-423d-90d6-eec64667417b] to "/Users/mcranmer/.julia/compiled/v1.12/SymbolicUtils/jl_cjljHN".
ERROR: LoadError: UndefVarError: `SCALARS` not defined in `SymbolicUtils`
Suggestion: define the const at top-level before running function that uses it (stricter Julia v1.12+ rule).
Note: the binding state changed since the error occurred (was: 11, now: 0).
Stacktrace:
  [1] macro expansion
    @ ~/.julia/packages/SymbolicUtils/5TED6/src/types.jl:200 [inlined]
  [2] var"#s77#7"(::Any, x::Any)
    @ SymbolicUtils ./none:0
  [3] (::Core.GeneratedFunctionStub)(::UInt64, ::Method, ::Any, ::Vararg{Any})
    @ Base ./expr.jl:1694
  [4] shape
    @ ~/.julia/packages/SymbolicUtils/5TED6/src/types.jl:250 [inlined]
  [5] call_composed
    @ ./operators.jl:1099 [inlined]
  [6] ComposedFunction
    @ ./operators.jl:1096 [inlined]
  [7] ntuple
    @ ./ntuple.jl:51 [inlined]
  [8] _multiplied_terms_shape(terms::Tuple{Int64, SymbolicUtils.BasicSymbolicImpl.var"typeof(BasicSymbolicImpl)"{SymbolicUtils.SymReal}})
    @ SymbolicUtils ~/.julia/packages/SymbolicUtils/5TED6/src/types.jl:2295
  [9] (::SymbolicUtils.MulWorkerBuffer{SymbolicUtils.SymReal})(terms::Tuple{Int64, SymbolicUtils.BasicSymbolicImpl.var"typeof(BasicSymbolicImpl)"{SymbolicUtils.SymReal}})
    @ SymbolicUtils ~/.julia/packages/SymbolicUtils/5TED6/src/types.jl:2423
 [10] mul_worker
    @ ~/.julia/packages/SymbolicUtils/5TED6/src/types.jl:2550 [inlined]
 [11] *
    @ ~/.julia/packages/SymbolicUtils/5TED6/src/types.jl:2558 [inlined]
 [12] -(a::SymbolicUtils.BasicSymbolicImpl.var"typeof(BasicSymbolicImpl)"{SymbolicUtils.SymReal})
    @ SymbolicUtils ~/.julia/packages/SymbolicUtils/5TED6/src/types.jl:2192
 [13] SymbolicUtils.Div{SymbolicUtils.SymReal}(n::SymbolicUtils.BasicSymbolicImpl.var"typeof(BasicSymbolicImpl)"{SymbolicUtils.SymReal}, d::SymbolicUtils.BasicSymbolicImpl.var"typeof(BasicSymbolicImpl)"{SymbolicUtils.SymReal}, simplified::Bool; type::Type, kw::@Kwargs{shape::SymbolicUtils.SmallVec{UnitRange{Int64}, Vector{UnitRange{Int64}}}})
    @ SymbolicUtils ~/.julia/packages/SymbolicUtils/5TED6/src/types.jl:1323
 [14] _fslash_worker(::Type{SymbolicUtils.SymReal}, a::SymbolicUtils.BasicSymbolicImpl.var"typeof(BasicSymbolicImpl)"{SymbolicUtils.SymReal}, b::SymbolicUtils.BasicSymbolicImpl.var"typeof(BasicSymbolicImpl)"{SymbolicUtils.SymReal})
    @ SymbolicUtils ~/.julia/packages/SymbolicUtils/5TED6/src/types.jl:2642
 [15] /(a::SymbolicUtils.BasicSymbolicImpl.var"typeof(BasicSymbolicImpl)"{SymbolicUtils.SymReal}, b::SymbolicUtils.BasicSymbolicImpl.var"typeof(BasicSymbolicImpl)"{SymbolicUtils.SymReal})
    @ SymbolicUtils ~/.julia/packages/SymbolicUtils/5TED6/src/types.jl:2646
 [16] macro expansion
    @ ~/.julia/packages/SymbolicUtils/5TED6/src/SymbolicUtils.jl:162 [inlined]
 [17] macro expansion
    @ ~/.julia/packages/PrecompileTools/gn08A/src/workloads.jl:73 [inlined]
 [18] macro expansion
    @ ~/.julia/packages/SymbolicUtils/5TED6/src/SymbolicUtils.jl:158 [inlined]
 [19] macro expansion
    @ ~/.julia/packages/PrecompileTools/gn08A/src/workloads.jl:121 [inlined]
 [20] top-level scope
    @ ~/.julia/packages/SymbolicUtils/5TED6/src/SymbolicUtils.jl:157
 [21] include(mod::Module, _path::String)
    @ Base ./Base.jl:306
 [22] include_package_for_output(pkg::Base.PkgId, input::String, depot_path::Vector{String}, dl_load_path::Vector{String}, load_path::Vector{String}, concrete_deps::Vector{Pair{Base.PkgId, UInt128}}, source::Nothing)
    @ Base ./loading.jl:2997
 [23] top-level scope
    @ stdin:5
 [24] eval(m::Module, e::Any)
    @ Core ./boot.jl:489
 [25] include_string(mapexpr::typeof(identity), mod::Module, code::String, filename::String)
    @ Base ./loading.jl:2843
 [26] include_string
    @ ./loading.jl:2853 [inlined]
 [27] exec_options(opts::Base.JLOptions)
    @ Base ./client.jl:315
 [28] _start()
    @ Base ./client.jl:550
in expression starting at /Users/mcranmer/.julia/packages/SymbolicUtils/5TED6/src/SymbolicUtils.jl:1
in expression starting at stdin:

[AayushSabharwal]

I believe this should be fixed on the latest release - we have CI running on 1.12 and I have run it locally as well.