Trigger the self-test publish path from the Fix label

The publish job was skipped in every self-test run, so the Settings to action input to environment variable hop was never exercised in CI. That is the hop this pull request repairs. Adding 'Fix' to the Default fixture's PrereleaseLabels resolves ReleaseType to Prerelease for the framework's own bugfix pull requests, so Publish-PSModule runs under WhatIf and logs the tag it would create.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Author: MariusStorhaug

tests/srcTestRepo/.github/PSModule.yml

@@ -1,3 +1,18 @@
 Name: PSModuleTest2
 Linter:
   Skip: true
+Publish:
+  Module:
+    # 'Fix' is here so that Process-PSModule's own self-test exercises the publish path. The framework
+    # repository labels its bugfix pull requests 'Fix', which makes Get-PSModuleSettings resolve
+    # ReleaseType to 'Prerelease' for this fixture, so Publish-PSModule actually runs and its resolved
+    # release tag is visible in the workflow log. Publish-Module.yml sets WhatIf whenever the workflow
+    # runs in PSModule/Process-PSModule, so nothing is published and no release is created.
+    #
+    # Never add a label that PSModule/Auto-Release recognises. It matches the literal string 'prerelease'
+    # with -Contains, which is case-insensitive in PowerShell, and would make this repository create a
+    # real prerelease release and tag of itself.
+    #
+    # This is a stopgap that covers the Settings -> action input -> environment variable hop until the
+    # end-to-end publish harness in PSModule/Process-PSModule#436 exists.
+    PrereleaseLabels: 'prerelease, Fix'