[release/v7.6] Correct the package name for .deb and .rpm packages (#26884)

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Travis Plunk <travis.plunk@microsoft.com>

.github/workflows/macos-ci.yml

@@ -54,6 +54,7 @@ jobs:
     outputs:
       source: ${{ steps.filter.outputs.source }}
       buildModuleChanged: ${{ steps.filter.outputs.buildModuleChanged }}
+      packagingChanged: ${{ steps.filter.outputs.packagingChanged }}
     steps:
       - name: checkout
         uses: actions/checkout@v5
@@ -161,7 +162,7 @@ jobs:
     name: macOS packaging and testing
     needs:
       - changes
-    if: ${{ needs.changes.outputs.source == 'true' || needs.changes.outputs.buildModuleChanged == 'true' }}
+    if: ${{ needs.changes.outputs.packagingChanged == 'true' }}
     runs-on:
       - macos-15-large
     steps:

tools/packaging/packaging.psm1

@@ -1159,12 +1159,16 @@ function New-UnixPackage {
         }
 
         # Determine if the version is a preview version
-        # Only LTS packages get a prefix in the name
-        # Preview versions are identified by the version string itself (e.g., 7.6.0-preview.6)
-        # Rebuild versions are also identified by the version string (e.g., 7.4.13-rebuild.5)
+        $IsPreview = Test-IsPreview -Version $Version -IsLTS:$LTS
+
+        # For deb/rpm packages, use the '-lts' and '-preview' channel suffix variants to match existing names on packages.microsoft.com.
+        # For osxpkg package, only LTS packages get a channel suffix in the name.
         $Name = if($LTS) {
             "powershell-lts"
         }
+        elseif ($IsPreview -and $Type -ne "osxpkg") {
+            "powershell-preview"
+        }
         else {
             "powershell"
         }