`LineNumberNode` in expressions do not print in a way that makes them parse back correctly

[KristofferC]

Consider

julia> using Test

julia> Base.remove_linenums!(@macroexpand1 @test 1 == 2)
quote
    if false
        Test.record(Test.get_testset(), Test.Broken(:skipped, $(QuoteNode(:(1 == 2)))))
    else
        let var"#10#_do" = if false
                    Test.do_broken_test
                else
                    Test.do_test
                end
            var"#10#_do"(begin
                    try
                        Test.eval_test(Test.Expr(:comparison, 1, ==, 2), Test.Expr(:comparison, $(QuoteNode(1)), :(==), $(QuoteNode(2))), $(QuoteNode(:(#= REPL[19]:1 =#))), $(QuoteNode(false)))
                    catch var"#12#_e"
                        var"#12#_e" isa Test.InterruptException && Test.rethrow()
                        Test.Threw(var"#12#_e", (Test.Base).current_exceptions(), $(QuoteNode(:(#= REPL[19]:1 =#)))) # <----------------
                    end
                end, $(QuoteNode(:(1 == 2))))
        end
    end
end

If one tries to copy paste this expression and eval it one gets:

julia> eval(q)
ERROR: MethodError: Cannot `convert` an object of type Expr to an object of type LineNumberNode
The function `convert` exists, but no method is defined for this combination of argument types.

Closest candidates are:
  convert(::Type{T}, ::T) where T
   @ Base Base_compiler.jl:134

Stacktrace:
 [1] Test.Threw(exception::Any, backtrace::Any, source::Any)
   @ Test ~/.julia/juliaup/julia-1.12-nightly/share/julia/stdlib/v1.12/Test/src/Test.jl:345
 [2] top-level scope
   @ REPL[20]:15
 [3] eval(m::Module, e::Any)
   @ Core ./boot.jl:489
 [4] top-level scope
   @ REPL[21]:1

Because the $(QuoteNode(:(#= REPL[19]:1 =#)))) printing part gets parsed as

$(QuoteNode(:(())))