ci(release): allow PSGallery publish to recover when the release already exists

The publish step (and PSGallery existence check) were gated on
'GitHub release does not exist', so a run that created the release but failed to
publish to PSGallery could never recover — re-runs skipped publishing entirely.

Regate (matching PlexAutomationToolkit's existing pattern):
- Check if PSGallery Version Exists: runs whenever not the un-initialized template
  (no longer gated on the release check).
- Bootstrap: runs if a release needs creating OR a publish is needed.
- Publish to PSGallery: gated only on the PSGallery check (publish if the version
  isn't on the gallery, regardless of whether the GitHub release exists).
- Create GitHub Release: unchanged (still skipped if the release exists).

Flagged by both CodeRabbit and Copilot during the YouTubeMusicPS rollout review.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: tablackburn

.github/workflows/PublishModuleToPowerShellGallery.yaml

@@ -66,7 +66,9 @@ jobs:
 
       - name: Check if PSGallery Version Exists
         id: check_psgallery
-        if: steps.check_release.outputs.exists == 'false'
+        # Run regardless of whether the GitHub release exists, so a release that was
+        # created but never published can still be recovered (see Publish gating below).
+        if: steps.template_guard.outputs.is_template == 'false'
         shell: pwsh
         env:
           VERSION: ${{ steps.version.outputs.version }}
@@ -82,7 +84,7 @@ jobs:
           }
 
       - name: Bootstrap
-        if: steps.check_release.outputs.exists == 'false'
+        if: steps.check_release.outputs.exists == 'false' || steps.check_psgallery.outputs.exists == 'false'
         shell: pwsh
         run: ./build.ps1 -Task Init -Bootstrap
 
@@ -144,7 +146,7 @@ jobs:
           }
 
       - name: Publish to PSGallery
-        if: steps.check_release.outputs.exists == 'false' && steps.check_psgallery.outputs.exists == 'false'
+        if: steps.check_psgallery.outputs.exists == 'false'
         shell: pwsh
         env:
           PSGALLERY_API_KEY: ${{ secrets.PSGALLERY_API_KEY }}