[Process] Fixes issue #11421
[Process] Add test to verify fix for issue #11421
Bring code into standard
bug #11425 Fix issue described in #11421 (Ben, ben-rosio)

This PR was merged into the 2.3 branch.

Discussion
----------

Fix issue described in #11421

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #11421
| License       | MIT
| Doc PR        | NA

This pull request fixes the issue described in #11421.  It also adds a test for the issue.  The issue is present in 2.0 forward, but I decided to fix it on the 2.3 branch so that I could also write a test for it (2.0 had no tests for the Process component, and 2.1 and 2.2 didn't have tests for the `ExecutableFinder` class).

Commits
-------

4cf50e8 Bring code into standard
9f4313c [Process] Add test to verify fix for issue #11421
02eb765 [Process] Fixes issue #11421