Multi-threading `VectorOfArray` of `SVector`s is broken on RecursiveArrayTools.jl version 4

[ranocha]

Describe the bug 🐞

julia> import Pkg; Pkg.activate(temp = true); Pkg.add(["FastBroadcast", "Polyester", "RecursiveArrayTools", "StaticArrays"])
  Activating new project
   Resolving package versions...
    Updating
  [7034ab61] + FastBroadcast v1.3.1
  [f517fe37] + Polyester v0.7.19
  [731186ca] + RecursiveArrayTools v4.0.1
  [90137ffa] + StaticArrays v1.9.18
    Updating
  [7d9f7c33] + Accessors v0.1.44
  [79e6a3ab] + Adapt v4.5.0
  [4fba245c] + ArrayInterface v7.23.0
  [62783981] + BitTwiddlingConvenienceFunctions v0.1.6
  [2a0fbf3d] + CPUSummary v0.2.7
  [fb6a15b2] + CloseOpenIntervals v0.1.13
  [f70d9fcc] + CommonWorldInvalidations v1.0.0
  [34da2185] + Compat v4.18.1
  [a33af91c] + CompositionsBase v0.1.2
  [187b0558] + ConstructionBase v1.6.0
  [adafc99b] + CpuId v0.3.1
  [ffbed154] + DocStringExtensions v0.9.5
  [e2ba6199] + ExprTools v0.1.10
  [7034ab61] + FastBroadcast v1.3.1
  [46192b85] + GPUArraysCore v0.2.0
  [615f187c] + IfElse v0.1.1
  [3587e190] + InverseFunctions v0.1.17
  [10f19ff3] + LayoutPointers v0.1.17
  [1914dd2f] + MacroTools v0.5.16
  [d125e4d3] + ManualMemory v0.1.8
  [f517fe37] + Polyester v0.7.19
  [1d0040c9] + PolyesterWeave v0.2.2
⌅ [aea7be01] + PrecompileTools v1.2.1
  [21216c6a] + Preferences v1.5.2
  [3cdcf5f2] + RecipesBase v1.3.4
  [731186ca] + RecursiveArrayTools v4.0.1
  [ae029012] + Requires v1.3.1
  [7e49a35a] + RuntimeGeneratedFunctions v0.5.17
  [94e857df] + SIMDTypes v0.1.0
  [431bcebd] + SciMLPublic v1.0.1
  [aedffcd0] + Static v1.3.1
  [0d7ed370] + StaticArrayInterface v1.9.0
  [90137ffa] + StaticArrays v1.9.18
  [1e83bf80] + StaticArraysCore v1.4.4
  [7792a7ef] + StrideArraysCore v0.5.8
  [2efcf032] + SymbolicIndexingInterface v0.3.46
  [8290d209] + ThreadingUtilities v0.5.5
  [56f22d72] + Artifacts
  [2a0f44e3] + Base64
  [ade2ca70] + Dates
  [8f399da3] + Libdl
  [37e2e46d] + LinearAlgebra
  [d6f4376e] + Markdown
  [de0858da] + Printf
  [9a3f8284] + Random
  [ea8e919c] + SHA v0.7.0
  [9e88b42a] + Serialization
  [fa267f1f] + TOML v1.0.3
  [cf7118a7] + UUIDs
  [4ec0a83e] + Unicode
  [e66e0078] + CompilerSupportLibraries_jll v1.1.1+0
  [4536629a] + OpenBLAS_jll v0.3.23+5
  [8e850b90] + libblastrampoline_jll v5.11.0+0
        Info Packages marked with ⌅ have new versions available but compatibility constraints restrict them from upgrading. To see why use `status --outdated -m`

julia> using FastBroadcast, Polyester, RecursiveArrayTools, StaticArrays

julia> u = VectorOfArray(fill(SVector(1.0, 1.0), 2, 2))
VectorOfArray{Float64,2}:
2×2 Matrix{SVector{2, Float64}}:
 [1.0, 1.0]  [1.0, 1.0]
 [1.0, 1.0]  [1.0, 1.0]

julia> v = copy(u)
VectorOfArray{Float64,2}:
2×2 Matrix{SVector{2, Float64}}:
 [1.0, 1.0]  [1.0, 1.0]
 [1.0, 1.0]  [1.0, 1.0]

julia> @.. thread=true v = v + u
ERROR: setindex!(::SVector{2, Float64}, value, ::Int) is not defined.
 Hint: Use `MArray` or `SizedArray` to create a mutable static array
Stacktrace:
  [1] error(s::String)
    @ Base ./error.jl:35
  [2] setindex!(a::SVector{2, Float64}, value::Float64, i::Int64)
    @ StaticArrays ~/.julia/packages/StaticArrays/0cEwi/src/indexing.jl:3
  [3] setindex!
    @ ~/.julia/packages/RecursiveArrayTools/0peF1/src/vector_of_array.jl:904 [inlined]
  [4] setindex!
    @ ./subarray.jl:331 [inlined]
  [5] _setindex!
    @ ./abstractarray.jl:1425 [inlined]
  [6] setindex!
    @ ./abstractarray.jl:1395 [inlined]
  [7] __fast_materialize!
    @ ~/.julia/packages/FastBroadcast/WRPAc/src/FastBroadcast.jl:152 [inlined]
  [8] _fast_materialize!
    @ ~/.julia/packages/FastBroadcast/WRPAc/src/FastBroadcast.jl:164 [inlined]
  [9] fast_materialize!
    @ ~/.julia/packages/FastBroadcast/WRPAc/src/FastBroadcast.jl:191 [inlined]
 [10] _batch_broadcast_fn
    @ ~/.julia/packages/FastBroadcast/WRPAc/ext/FastBroadcastPolyesterExt.jl:10 [inlined]
 [11] macro expansion
    @ ~/.julia/packages/Polyester/GQ6c9/src/batch.jl:246 [inlined]
 [12] _batch_no_reserve
    @ ~/.julia/packages/Polyester/GQ6c9/src/batch.jl:168 [inlined]
 [13] batch
    @ ~/.julia/packages/Polyester/GQ6c9/src/batch.jl:335 [inlined]
 [14] batch
    @ ~/.julia/packages/Polyester/GQ6c9/src/batch.jl:286 [inlined]
 [15] fast_materialize_threaded!(dst::VectorOfArray{…}, bc::Base.Broadcast.Broadcasted{…})
    @ FastBroadcastPolyesterExt ~/.julia/packages/FastBroadcast/WRPAc/ext/FastBroadcastPolyesterExt.jl:32
 [16] fast_materialize!(::Threaded, dst::VectorOfArray{…}, bc::Base.Broadcast.Broadcasted{…})
    @ FastBroadcast ~/.julia/packages/FastBroadcast/WRPAc/src/FastBroadcast.jl:216
 [17] top-level scope
    @ REPL[5]:1
Some type information was truncated. Use `show(err)` to see complete types.

julia> Threads.nthreads()
2

Expected behavior

As in version v3.54.0 of RecursiveArrayTools.jl, the output is

julia> @.. thread=true v = v + u
VectorOfArray{Float64,2}:
2×2 Matrix{SVector{2, Float64}}:
 [2.0, 2.0]  [2.0, 2.0]
 [2.0, 2.0]  [2.0, 2.0]

Minimal Reproducible Example 👇

See above

Error & Stacktrace ⚠️

See above

Environment (please complete the following information):

See above

Additional context

Successor of #564. Does RecursiveArrayTools.jl use multiple threads in CI to test the new extensions properly?