`rand!` without rng falls-back to sampler interface

[avik-pal]

julia> function rand_on_device()
           x = Reactant.Ops.fill(0.0f0, (3, 4, 5))
           rand!(x)
           return x
       end
rand_on_device (generic function with 1 method)

julia> @code_hlo rand_on_device()
ERROR: MethodError: no method matching Random.Sampler(::Type{Reactant.ReactantRNG{…}}, ::Random.SamplerType{Reactant.TracedRNumber{…}}, ::Val{1})
This error has been manually thrown, explicitly, so the method may exist but be intentionally marked as unimplemented.

Closest candidates are:
  Random.Sampler(::Type{<:AbstractRNG}, ::Random.Sampler, ::Union{Val{1}, Val{Inf}})
   @ Random ~/.julia/juliaup/julia-1.11.5+0.x64.linux.gnu/share/julia/stdlib/v1.11/Random/src/Random.jl:147
  Random.Sampler(::Type{<:AbstractRNG}, ::Any, ::Union{Val{1}, Val{Inf}})
   @ Random ~/.julia/juliaup/julia-1.11.5+0.x64.linux.gnu/share/julia/stdlib/v1.11/Random/src/Random.jl:183
  Random.Sampler(::Type{<:AbstractRNG}, ::BitSet, ::Union{Val{1}, Val{Inf}})
   @ Random ~/.julia/juliaup/julia-1.11.5+0.x64.linux.gnu/share/julia/stdlib/v1.11/Random/src/generation.jl:488
  ...

Stacktrace:
  [1] Sampler
    @ ~/.julia/juliaup/julia-1.11.5+0.x64.linux.gnu/share/julia/stdlib/v1.11/Random/src/Random.jl:147 [inlined]
  [2] Random.Sampler(none::Type{Reactant.ReactantRNG{Reactant.TracedRArray{UInt64, 1}}}, none::Random.SamplerType{Reactant.TracedRNumber{Float32}}, none::Val{1})
    @ Reactant ./<missing>:0
  [3] Sampler
    @ ~/.julia/juliaup/julia-1.11.5+0.x64.linux.gnu/share/julia/stdlib/v1.11/Random/src/Random.jl:147 [inlined]
  [4] call_with_reactant(::Reactant.MustThrowError, ::Type{Random.Sampler}, ::Type{Reactant.ReactantRNG{Reactant.TracedRArray{UInt64, 1}}}, ::Random.SamplerType{Reactant.TracedRNumber{Float32}}, ::Val{1})
    @ Reactant /mnt/software/lux/Reactant.jl/src/utils.jl:0
  [5] Sampler
    @ ~/.julia/juliaup/julia-1.11.5+0.x64.linux.gnu/share/julia/stdlib/v1.11/Random/src/Random.jl:141 [inlined]
  [6] Random.Sampler(none::Reactant.ReactantRNG{Reactant.TracedRArray{UInt64, 1}}, none::Random.SamplerType{Reactant.TracedRNumber{Float32}}, none::Val{1})
    @ Reactant ./<missing>:0
  [7] Sampler
    @ ~/.julia/juliaup/julia-1.11.5+0.x64.linux.gnu/share/julia/stdlib/v1.11/Random/src/Random.jl:141 [inlined]
  [8] call_with_reactant(::Reactant.MustThrowError, ::Type{Random.Sampler}, ::Reactant.ReactantRNG{Reactant.TracedRArray{UInt64, 1}}, ::Random.SamplerType{Reactant.TracedRNumber{Float32}}, ::Val{1})
    @ Reactant /mnt/software/lux/Reactant.jl/src/utils.jl:0
  [9] rand
    @ ~/.julia/juliaup/julia-1.11.5+0.x64.linux.gnu/share/julia/stdlib/v1.11/Random/src/Random.jl:255 [inlined]
 [10] rand(none::Reactant.ReactantRNG{Reactant.TracedRArray{UInt64, 1}}, none::Random.SamplerType{Reactant.TracedRNumber{Float32}})
    @ Reactant ./<missing>:0
 [11] rand
    @ ~/.julia/juliaup/julia-1.11.5+0.x64.linux.gnu/share/julia/stdlib/v1.11/Random/src/Random.jl:255 [inlined]
 [12] call_with_reactant(::Reactant.MustThrowError, ::typeof(rand), ::Reactant.ReactantRNG{Reactant.TracedRArray{UInt64, 1}}, ::Random.SamplerType{Reactant.TracedRNumber{Float32}})
    @ Reactant /mnt/software/lux/Reactant.jl/src/utils.jl:0
 [13] rand!
    @ ~/.julia/juliaup/julia-1.11.5+0.x64.linux.gnu/share/julia/stdlib/v1.11/Random/src/Random.jl:273 [inlined]
 [14] rand!
    @ ~/.julia/juliaup/julia-1.11.5+0.x64.linux.gnu/share/julia/stdlib/v1.11/Random/src/Random.jl:269 [inlined]
 [15] rand! (repeats 2 times)
    @ ~/.julia/juliaup/julia-1.11.5+0.x64.linux.gnu/share/julia/stdlib/v1.11/Random/src/Random.jl:266 [inlined]
 [16] rand!(none::Reactant.TracedRArray{Float32, 3})
    @ Reactant ./<missing>:0
 [17] rand! (repeats 2 times)
    @ ~/.julia/juliaup/julia-1.11.5+0.x64.linux.gnu/share/julia/stdlib/v1.11/Random/src/Random.jl:266 [inlined]
 [18] call_with_reactant(::typeof(rand!), ::Reactant.TracedRArray{Float32, 3})
    @ Reactant /mnt/software/lux/Reactant.jl/src/utils.jl:0
 [19] rand_on_device
    @ ./REPL[23]:3 [inlined]
 [20] rand_on_device()
    @ Reactant ./<missing>:0
 [21] fill
    @ /mnt/software/lux/Reactant.jl/src/Ops.jl:174 [inlined]
 [22] rand_on_device
    @ ./REPL[23]:2 [inlined]
 [23] call_with_reactant(redub_arguments#232::typeof(rand_on_device))
    @ Reactant /mnt/software/lux/Reactant.jl/src/utils.jl:0
 [24] make_mlir_fn(f::typeof(rand_on_device), args::Tuple{}, kwargs::@NamedTuple{}, name::String, concretein::Bool; toscalar::Bool, return_dialect::Symbol, args_in_result::Symbol, construct_function_without_args::Bool, do_transpose::Bool, input_shardings::Nothing, output_shardings::Nothing, runtime::Val{…}, verify_arg_names::Nothing, argprefix::Symbol, resprefix::Symbol, resargprefix::Symbol, num_replicas::Int64, optimize_then_pad::Bool)
    @ Reactant.TracedUtils /mnt/software/lux/Reactant.jl/src/TracedUtils.jl:330
 [25] compile_mlir!(mod::Reactant.MLIR.IR.Module, f::Function, args::Tuple{}, compile_options::CompileOptions, callcache::Dict{…}, sdycache::Dict{…}; fn_kwargs::@NamedTuple{}, backend::String, runtime::Val{…}, kwargs::@Kwargs{})
    @ Reactant.Compiler /mnt/software/lux/Reactant.jl/src/Compiler.jl:1510
 [26] compile_mlir!
    @ /mnt/software/lux/Reactant.jl/src/Compiler.jl:1478 [inlined]
 [27] (::Reactant.Compiler.var"#9#10"{Nothing, typeof(rand_on_device), Tuple{}})(ctx::Reactant.MLIR.IR.Context)
    @ Reactant.Compiler /mnt/software/lux/Reactant.jl/src/Compiler.jl:1335
 [28] with_context(f::Reactant.Compiler.var"#9#10"{Nothing, typeof(rand_on_device), Tuple{}}; allow_use_existing::Bool)
    @ Reactant.MLIR.IR /mnt/software/lux/Reactant.jl/src/mlir/IR/Context.jl:99
 [29] with_context(f::Function)
    @ Reactant.MLIR.IR /mnt/software/lux/Reactant.jl/src/mlir/IR/Context.jl:82
 [30] compile_mlir(f::Function, args::Tuple{}; client::Nothing, kwargs::@Kwargs{…})
    @ Reactant.Compiler /mnt/software/lux/Reactant.jl/src/Compiler.jl:1331
 [31] top-level scope
    @ /mnt/software/lux/Reactant.jl/src/Compiler.jl:2557
 [32] top-level scope
    @ none:1
Some type information was truncated. Use `show(err)` to see complete types.