feat(macos): add support for wcpncpy replacement

[LouisBrunner]

Resolves #149

[github-actions]

Smart Diff (ubuntu-24.04): Failure

Expected tolerance same but got worse instead

===================================================================
--- .github/ubuntu-24.04-expected.txt
+++ .github/test/filtered-results.txt
@@ -1,4 +1,5 @@
+memcheck/tests/wcpncpy                   (stderr)
 none/tests/fdleak_cmsg                   (stderr)
 none/tests/fdleak_cmsg_supp              (stderr)
 none/tests/fdleak_cmsg_xml               (stderr)
 none/tests/fdleak_creat                  (stderr)

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[LouisBrunner]

Already merged upstream.