Consolidate Rust release artifact downloads (#45051)

Download target artifacts, supplemental release assets, and staged npm
packages in a single `actions/download-artifact` step in
`.github/workflows/rust-release.yml` using a combined artifact pattern.

GitOrigin-RevId: 64c63cc7a2e263418b2a4064c1fd46e1c514cc29

.github/workflows/rust-release.yml

@@ -1586,17 +1586,11 @@ jobs:
 
           echo "path=${notes_path}" >> "${GITHUB_OUTPUT}"
 
-      - name: Download target artifacts
+      - name: Download release artifacts
         uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
         with:
           path: dist
-          pattern: "{aarch64,x86_64}-{apple-darwin{,-app-server},unknown-linux-musl{,-app-server},pc-windows-msvc}"
-
-      - name: Download supplemental release artifacts
-        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
-        with:
-          path: dist
-          pattern: "{*-symbols,argument-comment-lint-*,python-runtime-wheel-*}"
+          pattern: "{{aarch64,x86_64}-{apple-darwin{,-app-server},unknown-linux-musl{,-app-server},pc-windows-msvc},*-symbols,argument-comment-lint-*,python-runtime-wheel-*,npm-packages}"
 
       - name: List
         run: ls -R dist/
@@ -1662,12 +1656,6 @@ jobs:
             echo "npm_tag=" >> "$GITHUB_OUTPUT"
           fi
 
-      - name: Download staged npm packages
-        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
-        with:
-          name: npm-packages
-          path: dist/npm
-
       - name: Stage installer scripts
         run: |
           cp scripts/install/install.sh dist/install.sh