Add npm package artifact generation to test workflow (#819)

* Initial plan

* Add rush pack and artifact upload steps to test workflow

Co-authored-by: mikeharder <9459391+mikeharder@users.noreply.github.com>

* Restrict pack and upload to ubuntu-latest only with simplified artifact name

Co-authored-by: mikeharder <9459391+mikeharder@users.noreply.github.com>

* Use contains() to check for ubuntu in OS string

Co-authored-by: mikeharder <9459391+mikeharder@users.noreply.github.com>

* Upgrade actions to v6 and update Node version from 22 to 24

Co-authored-by: mikeharder <9459391+mikeharder@users.noreply.github.com>

* Apply suggestion from @mikeharder

* Exclude tarballs under node_modules from artifact upload

Co-authored-by: mikeharder <9459391+mikeharder@users.noreply.github.com>

* Revert actions upgrade to v4 and node version back to 22

Co-authored-by: mikeharder <9459391+mikeharder@users.noreply.github.com>

* Upgrade upload-artifact action to v6

Co-authored-by: mikeharder <9459391+mikeharder@users.noreply.github.com>

* Simplify node_modules exclusion to exclude everything under node_modules

Co-authored-by: mikeharder <9459391+mikeharder@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: mikeharder <9459391+mikeharder@users.noreply.github.com>
Co-authored-by: Mike Harder <mharder@microsoft.com>

Author: Copilot

.github/workflows/test.yaml

@@ -42,3 +42,17 @@ jobs:
 
       - name: rush regen-ruleindex
         run: node common/scripts/install-run-rush.js regen-ruleindex
+
+      - name: rush pack
+        if: contains(matrix.os, 'ubuntu')
+        run: node common/scripts/install-run-rush.js pack
+
+      - name: Upload npm packages
+        if: contains(matrix.os, 'ubuntu')
+        uses: actions/upload-artifact@v6
+        with:
+          name: packages
+          path: |
+            packages/**/*.tgz
+            !packages/**/node_modules/**
+          if-no-files-found: error