When a type is defined in one module but its methods are defined
elsewhere, `show_method_table` errors due to an incorrect lookup of the
defining module used to determine colors for printing. In particular,
the code had been assuming that the type is defined in the module in
which its constructor's first method (in the sense of
`first(methods())`) is defined, which isn't always true.

The color used for printing the module name needs to be determined on a
per-method basis and can't be correctly done based on the method table's
module. For each method, we attempt to derive the module for the method
table to which the method was added, then determine whether it's the
same as the defining module for the method.

Fixes #49382
Fixes #49403
Fixes #52043

Co-Authored-By: Jameson Nash <[email protected]>