Fix package tarball filename pattern in test_exports workflow

Co-authored-by: lukasoppermann <[email protected]>

Author: Copilot

.github/workflows/test_exports.yml

@@ -44,7 +44,7 @@ jobs:
       - name: Install packed package
         run: |
           cd test-exports
-          PACKAGE_FILE=$(ls ../@primer-primitives-*.tgz | head -1)
+          PACKAGE_FILE=$(ls ../primer-primitives-*.tgz | head -1)
           npm install "$PACKAGE_FILE"
 
       - name: Test main exports

.gitignore

@@ -7,4 +7,5 @@ coverage/
 docs/public/
 color-contrast-check.json
 blob-report
-integration/buildprimer-primitives-*.tgz
+integration/build
+primer-primitives-*.tgz