Fix location for default_servers.pvsc

Since we stopped supporting shared-forwarding on linux, the location for
default_servers.pvsc inadvertently changed to `bin` instead of `lib`.
This fixes that. It now supports both locations since we have few
releases now that use the `bin` location instead.

Fixes #20175.
6 jobs for !4363 with 20175-default_servers-location
detached
Status Name Job ID Coverage
  Package
manual package:documentation #5180440
build docker linux paraview manual
manual package:spack-centos7 #5180439
build docker linux paraview manual
 
  External
passed cdash-buildbot

passed cdash-commit

passed ghostflow-branch-check-master

failed paraview@master-vall-linux-shared-debug+adios2+extdeps+gui+mpi+python3

01:04:05