perldiag: Reunite ‘perhaps you forgot to load’

to the other part of the message.  diagnostics.pm won’t find it otherwise:

$ perl -Mdiagnostics -we '"foo"->bar'
Can't locate object method "bar" via package "foo" (perhaps you forgot to load
	"foo"?) at -e line 1 (#1)
Uncaught exception from user code:
	Can't locate object method "bar" via package "foo" (perhaps you forgot to load "foo"?) at -e line 1.

Now we have this:

Can't locate object method "bar" via package "foo" (perhaps you forgot to load
	"foo"?) at -e line 1 (#1)
    (F) You called a method on a class that did not exist, and the method
    could not be found in UNIVERSAL.  This often means that a method
    requires a package that has not been loaded.

Uncaught exception from user code:
	Can't locate object method "bar" via package "foo" (perhaps you forgot to load "foo"?) at -e line 1.