errorshow: Hint on same-named types from different modules

[adienes]

when you have types of the same name but different modules, and accidentally pass the wrong one to a function, the MethodError can be confusing until you realize what happened. this attempts to add a hint to alleviate that.

example:

julia> module Geometry
           struct Point
               x::Float64
               y::Float64
           end
           translate(p::Point, dx, dy) = Point(p.x + dx, p.y + dy)
       end
Main.Geometry

julia> struct Point
           lat::Float64
           lon::Float64
       end

julia> p = Point(40.7, -74.0);

julia> Geometry.translate(p, 1, 2)

# BEFORE
ERROR: MethodError: no method matching translate(::Point, ::Int64, ::Int64)
The function `translate` exists, but no method is defined for this combination of argument types.

Closest candidates are:
  translate(::Main.Geometry.Point, ::Any, ::Any)
   @ Main.Geometry REPL[3]:6


# AFTER
ERROR: MethodError: no method matching translate(::Point, ::Int64, ::Int64)
You may have intended `Main.Geometry.Point` rather than `Main.Point`.
The function `translate` exists, but no method is defined for this combination of argument types.

Closest candidates are:
  translate(::Main.Geometry.Point, ::Any, ::Any)
   @ Main.Geometry REPL[4]:6

fixes #41084
half claude half me