Fix @test_broken to actually assert type intersection result

This test is still valid, but it was not actually asserting anything due
to not returning a boolean value.

Author: staticfloat

test/subtype.jl

@@ -2230,7 +2230,7 @@ T46784{B<:Val, M<:AbstractMatrix} = Tuple{<:Union{B, <:Val{<:B}}, M, Union{Abstr
                                (Tuple{Type{T},Array{Union{T,Nothing},N}} where {T,N})) <: Any
 
     #issue 35698
-    @test_broken typeintersect(Type{Tuple{Array{T,1} where T}}, UnionAll)
+    @test_broken typeintersect(Type{Tuple{Array{T,1} where T}}, UnionAll) != Union{}
 
     #issue 33137
     @test_broken (Tuple{Q,Int} where Q<:Int) <: Tuple{T,T} where T