Fix dot-evaluation fast path

[Keno]

Broadcast calls like sin.(x) are parsed to

Expr(:(.), :sin, Expr(:tuple, :x))

before lowering. As a result, they got caught in the
top-level interpreters fast path for lowering calls
like that to getfield/getproperty, causing #26739.

Fixes #26739

[JeffBezanson]

It's not great that we have to replicate part of lowering here. Why is this needed? Maybe we can narrow the logic even more, accepting only a.b in the fast path.

[Keno]

This particular PR is needed to fix the referenced issue. Why the fast-path is needed, you'll have to ask @vtjnash.

[fredrikekre]

Is this also related to the fast path for .:

julia> sum.[1]
ERROR: MethodError: no method matching getproperty(::typeof(sum), ::Expr)
Closest candidates are:
  getproperty(::Any, ::Symbol) at sysimg.jl:18

julia> Base.getproperty(::typeof(sum), ::Expr) = "Hello"

julia> sum.[1]
"Hello"

julia> foo() = sum.[1]
ERROR: syntax: invalid syntax sum.[1]

It is a bit weird at least.