Support begin and end in gen_call_with_extracted_types users

[ianatol]

Fixes #45428 #37379 JuliaDebug/Cthulhu.jl#291

Locally passes relevant tests (Base.runtests("InteractiveUtils show reflection staged"), but its a pretty naive approach so would like to see results of CI and get further comments. Seems to generally fix what its supposed to though:

Before:

julia> a = [1,2]; @which a[1:end]
ERROR: UndefVarError: end not defined
Stacktrace:
 [1] top-level scope
   @ REPL[25]:1

julia> @code_typed a[1:end]
ERROR: UndefVarError: end not defined
Stacktrace:
 [1] top-level scope

After:

julia> a = [1,2]; @which a[1:end]
getindex(A::Array, I::AbstractUnitRange{<:Integer})
     @ Base array.jl:921

julia> @code_typed a[1:end]
CodeInfo(
1 ─       goto #6 if not $(Expr(:boundscheck))
2 ─ %2  = Core.tuple(I)::Tuple{UnitRange{Int64}}
[snip...]
) => Vector{Int64}

[aviatesk]

Can you add test cases too?

[ianatol]

Added some basic tests