refactor(tests): update context menu action tests and drag-drop functionality

- Refactored context menu action tests for collections and requests to use sequential tagging.
- Improved readability and consistency in test structure and assertions.
- Updated drag-and-drop tests for cross-project interactions to enhance clarity and maintainability.
- Ensured proper handling of asynchronous operations and improved test reliability.

.github/workflows/insomnia-test.yml

@@ -137,7 +137,7 @@ jobs:
         working-directory: packages/insomnia-test
         env:
           INSOMNIA_BINARY: ${{ github.workspace }}/packages/insomnia/dist/linux-unpacked/insomnia
-        run: xvfb-run --auto-servernum npx playwright test --shard=${{ matrix.shardIndex }}/${{ matrix.shardTotal }}
+        run: xvfb-run --auto-servernum npx playwright test --grep-invert '@sequential' --shard=${{ matrix.shardIndex }}/${{ matrix.shardTotal }}
 
       - name: Upload Playwright report
         uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6
@@ -147,3 +147,62 @@ jobs:
           path: packages/insomnia-test/playwright-report/
           retention-days: 7
           if-no-files-found: ignore
+
+  # ---------------------------------------------------------------------------
+  # Run tests tagged @sequential with a single worker. These cases interfere with
+  # each other (or with the parallel shards above) when run concurrently, so
+  # they're isolated into their own single-threaded stage.
+  # ---------------------------------------------------------------------------
+  test-sequential:
+    needs: build
+    timeout-minutes: 30
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    permissions:
+      contents: read
+      packages: read
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@fbc6f3992d24b796d5a048ff273f7fcc4a7b6c09 # v5
+
+      - name: Setup Node.js
+        uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5
+        with:
+          node-version: "24"
+
+      - name: Restore Insomnia binary
+        uses: actions/cache/restore@caa296126883cff596d87d8935842f9db880ef25 # v5
+        with:
+          path: packages/insomnia/dist/linux-unpacked
+          key: insomnia-linux-unpacked-${{ github.sha }}
+          fail-on-cache-miss: true
+
+      - name: Install test dependencies
+        run: |
+          sed -i 's/patch-package && npm run verify-bundle-plugins -w insomnia && npm run install-libcurl-electron/patch-package/' package.json
+          npm ci
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Install Electron system dependencies
+        working-directory: packages/insomnia-test
+        run: npx playwright install-deps chromium
+
+      - name: Install ffmpeg (required for video recording)
+        working-directory: packages/insomnia-test
+        run: npx playwright install ffmpeg
+
+      - name: Run Playwright tests (@sequential, single worker)
+        working-directory: packages/insomnia-test
+        env:
+          INSOMNIA_BINARY: ${{ github.workspace }}/packages/insomnia/dist/linux-unpacked/insomnia
+        run: xvfb-run --auto-servernum npx playwright test --grep '@sequential' --workers=1
+
+      - name: Upload Playwright report
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6
+        if: ${{ !cancelled() }}
+        with:
+          name: playwright-report-sequential
+          path: packages/insomnia-test/playwright-report/
+          retention-days: 7
+          if-no-files-found: ignore