[Chapel Merge] Futurize some tests that have a problem described

Branch: refs/heads/main
Revision: 9655811
Author: daviditen
Link: Unavailable
Log Message:

Merge pull request #20517 from daviditen/futurize-borrowed-tests

Futurize some tests that have a problem described in issue #20516

[as suggested by @mppf]

These tests have a problem described in #20516 so make them .futures for now.

Modified Files:
A test/classes/deitz/dispatch/test_dc1.future

A test/classes/deitz/inherit/test_inherit4b.future
A test/functions/varargs/varargOverrideGeneric.future

Compare: https://github.com/chapel-lang/chapel/compare/6c6d19e61fe9...9655811de5d1