Fix introspection macros on simple dot symbol call

[Liozou]

Fix #45889. With this PR:

julia> @code_lowered 1 .+ 1
CodeInfo(
1 ─ %1 = Base.broadcasted(Main.:+, x1, x2)
│   %2 = Base.materialize(%1)
└──      return %2
)

julia> @code_lowered .- 0.5
CodeInfo(
1 ─ %1 = Base.broadcasted(Main.:-, x1)
│   %2 = Base.materialize(%1)
└──      return %2
)

[Liozou]

CI failure looks unrelated.